ascorbic acid — label CAS 50-81-7
ascorbic acid — label CAS 50-81-7

Ascorbic acid (CAS 50-81-7)

Ascorbic acid. CAS 50-81-7.

Free, and generated automatically from the sources listed on this page. No person has reviewed it, and it describes the substance in general — not your material, your process or your intended market.

REACH 2020/878
v3 · 18.10.2026

Section 9 — physicochemical properties: 11 of 22 established.

We show what is established and name what is not. Classification and identity are complete on every card; section 9 is where public data is thin.

DOCUMENTATION AND 3D PRINTED MODELS ONLY

This page offers documentation related to the listed substance. MolGod does not sell or supply the chemical substance itself.

Scientific · Buyer · Compliance

This page sells the documentation for this substance, not the substance. Choose the level you need.

  1. €0Audit the sheet you already haveSend us your existing sheet for this substance and we tell you what is wrong with it. One per company. If it turns out to be sound, you buy nothing.Start the free audit →
  2. €49.99Working draftThe complete sixteen-section document, referenced, downloadable immediately after checkout. The right choice while the paperwork is still moving.
  3. €249.99Signed cardThe same document reviewed and signed, issued within 72 hours of complete input — for the moment somebody official asks who stands behind it.

Documentation available for this substance: safety data sheet · CLP label · certificate of analysis on request · specification. Languages: the official language of your destination market, produced per card.

Grade, purity, physical form, packaging, minimum order and lead time are not shown, because MolGod does not supply the material — those are facts about a seller, and there is no seller on this page. They appear on storefronts we build for suppliers, where somebody can answer for them.

See a finished document firstFull price list →

What you receive — and what this is not

What you receive

  • A digital PDF safety data sheet in the sixteen-section structure of REACH Annex II (Regulation 1907/2006).
  • Substance identification, hazard classification, physicochemical, toxicological and ecological information, and regulatory references.
  • Classification read against the harmonised entry in CLP Annex VI where one exists for the substance.
  • A version number, a compilation date, and the source behind each value that carries one.
  • Delivery by e-mail. Nothing is shipped.

What this is not

  • Not a chemical substance, not a sample, not any physical goods.
  • Not a certification. No official certification scheme for safety data sheets exists in the European Union.
  • Not legal approval, and not a guarantee of compliance in any jurisdiction.
  • Not a substitute for your own regulatory assessment, nor for the safety data sheet supplied by the manufacturer or importer of the substance you actually hold.
  • Not adapted to a specific workplace, process or national annex unless you provide that information.

Where the available evidence does not support a value, the sheet states that the value is not established rather than estimating one. A field with no recorded source is marked as such.

What is in the buyer pack

Everything your compliance officer will ask for, in one file.

  • The product page as PDF — the record as published, so what you forward matches what you read.
  • The safety data sheet at your entitlement level — sixteen sections in the order set by REACH Annex II, for this substance, in the language you select.
  • The CLP label artwork — generated from the same classification as the sheet, so the two cannot disagree.
  • The specification, and the certificate of analysis where batch data exists.
  • sources.txt — every citation with the date it was read.
  • An explicit list of what we could not establish — fields marked unavailable rather than filled with an estimate. This is the honest part of the document and we do not hide it in a footnote.

Your European buyer is going to forward this to somebody who was not on the call. The pack exists so that what they forward is complete, self-explanatory and traceable — rather than four attachments and a sentence beginning “I think this is everything”.

About the language versions

These switch the language of this page. Single substances. Mixtures on enquiry. One document, one language — additional languages are priced separately. Every version, including the Chinese one, is written to EU law — (EC) No 1907/2006 (REACH) Annex II and (EU) 2020/878 — and translated from it. The Chinese version is a reference translation, not a legally valid document for the Chinese market: an SDS for China must be compiled separately to GB/T 16483 and GB/T 17519.

🧬 3D Molecule Visualizer
Loading molecule...
3D model L-Ascorbic Acid, CAS 50-81-7, molecular formula C6H8O6, molar mass 176.12 g/mol

Model views

  • Ascorbic acid (CAS 50-81-7) – ball-and-stick 3D model, MolGod Viewer
    ball-and-stick 3D model
  • Ascorbic acid (CAS 50-81-7) – skeletal 3D model, MolGod Viewer
    skeletal 3D model
  • space-filling 3D model – rotation animation
  • Ascorbic acid (CAS 50-81-7) – 2D structure, MolGod Viewer
    2D structure

© 2026 MolGod.org. All rights reserved. · Image rights

Data transcribed from regulatory registers and technical literature, with the source and edition stated. It does not replace the supplier's safety data sheet. Fields without a recorded source are marked as such.

🖨️ 3D print model & license
ascorbic acid (CAS 50-81-7), C6H8O6 - 3D ball-and-stick molecular model, engraved element symbols (C H O), MolGod STL previewDownload image

MG_469-903-322-56 · engraved · 269,084 △ · 13 MB · SHA-256 61f5061789282307

Download 3D model · ENGRAVED · C H O

ascorbic acid (CAS 50-81-7), C6H8O6 - 3D ball-and-stick molecular model, MolGod STL previewDownload image

MG_469-903-322-56 · normal · 8,512 △ · 416 KB · SHA-256 5693179ef45dd363

Download 3D model

License & provenance ↓

⚠️ The MolGod.org name and logo, including the raised logo on the base, are our trademark. The CC BY-SA 4.0 licence does not cover trademarks (section 2(b)(2)). Do not use the MolGod.org logo to brand your own products, in advertising, or in any way that suggests our endorsement without our written permission.

📊 Physicochemical data — CAS 50-81-7
📊 Physicochemical properties

Quick Reference

Formula: C6H8O6
MW: 176.12 g/mol
CAS: 50-81-7
Appearance: Crystals (usually plates, sometimes needles, monoclinic system)
Odour: Odorless

Detailed Properties

Supplements the “Physical & Chemical Properties (DB)” table below — values already shown there are not repeated.

Property Value Unit Conditions Source
Refractive Index (nD) 1.534[1] 20 °C, D-line CRC Handbook 105th ed. (Haynes 2024)
🔬 Advanced Properties

Chemical Identifiers

SMILES: C([C@@H]([C@@H]1C(=C(C(=O)O1)O)O)O)O

Data sources: CRC Handbook 105th ed. (Haynes 2024) (ISBN 9781032655628)

Last updated: 2026-09-02

📚 Scientific references (Chicago Author-Date) (1 sources)
  1. Rumble, J.R., ed. CRC Handbook of Chemistry and Physics. 105th ed. Boca Raton: CRC Press, 2024. ↗ applies to: Refractive Index (nD)
Chemical Overview: L-Ascorbic Acid
Molecular formulaC6H8O6[1]
Molecular weight176.12 g/mol[1]
Melting point190 °C[1][2][3]
Density1.65 g/cm³[1][3]
LogP (lipophilicity)-1.85[3]
pKa4.17[3]
IUPAC name(2R)-2-[(1S)-1,2-dihydroxyethyl]-3,4-dihydroxy-2H-furan-5-one[1]
SMILESC([C@@H]([C@@H]1C(=C(C(=O)O1)O)O)O)O[1]
InChIKeyCIWBSHSKHKDKBQ-JLAZNSOCSA-N[1]

Synonyms: l-ascorbic acid · ascorbic acid · vitamin C · 50-81-7 · L(+)-Ascorbic acid

Data sources: PubChem (NLM/NIH), CRC Handbook 105th ed. (Haynes 2024)
Last updated: 2026-09-03

📚 Scientific references (Chicago Author-Date) (3 sources)
  1. PubChem. National Center for Biotechnology Information (NIH/NLM), chemical compound database. ↗ applies to: Molecular formula · Molecular weight · Melting point · Density · IUPAC name · SMILES · InChIKey
  2. NIST. Chemistry WebBook, SRD 69. National Institute of Standards and Technology. ↗ applies to: Melting point
  3. Rumble, J.R., ed. CRC Handbook of Chemistry and Physics. 105th ed. Boca Raton: CRC Press, 2024. ↗ applies to: Melting point · Density · LogP (lipophilicity) · pKa

SCIENTIFIC RESEARCH

[1]PubMed2026
Vitamins and skin aging.
Kazandjieva J, Bogdanov G, Bogdanov I et al.. (2026). "Vitamins and skin aging.". Clinics in dermatology. https://doi.org/10.1016/j.clindermatol.2026.04.010
Go to full study ↗
[2]PubMed2026
Reparative Effects of a Topical Antioxidant Serum Containing Vitamin C, Vitamin E, and Ferulic Acid After Ablative Fractional…
Shi Y, Xu S, Zhang W. (2026). "Reparative Effects of a Topical Antioxidant Serum Containing Vitamin C, Vitamin E, and Ferulic Acid After Ablative Fractional CO(2) Laser Treatment for Atrophic Acne Sca
Go to full study ↗
[3]PubMed2026
Early high-dose vitamin C for out-of-hospital cardiac arrest: the VITaCCA randomized clinical trial.
Rozemeijer S, Dubois EA, de Grooth HJ et al.. (2026). "Early high-dose vitamin C for out-of-hospital cardiac arrest: the VITaCCA randomized clinical trial.". Intensive care medicine. https://doi.org/1
Go to full study ↗
[4]PubMed2026
Vitamin C is essential for proper myogenic differentiation.
Kondo Y, Sato A, Osakabe N et al.. (2026). "Vitamin C is essential for proper myogenic differentiation.". Archives of biochemistry and biophysics. https://doi.org/10.1016/j.abb.2025.110704
Go to full study ↗
[5]PubMed2026
Vitamin C inhibits ACSL4 to alleviate ferro-aging in primates.
Liu L, Zheng Z, You W et al.. (2026). "Vitamin C inhibits ACSL4 to alleviate ferro-aging in primates.". Cell metabolism. https://doi.org/10.1016/j.cmet.2026.02.010
Go to full study ↗
[6]PubMed2026
Vitamin C attenuates primate bone marrow aging at the molecular and progenitor level.
Ye Y, Zhang H, Xin Z et al.. (2026). "Vitamin C attenuates primate bone marrow aging at the molecular and progenitor level.". Cell stem cell. https://doi.org/10.1016/j.stem.2026.06.006
Go to full study ↗
[7]PubMed2025
Loss of vitamin C biosynthesis protects from the pathology of a parasitic infection.
Chen G, Jun JH, Wijshake T et al.. (2025). "Loss of vitamin C biosynthesis protects from the pathology of a parasitic infection.". Proceedings of the National Academy of Sciences of the United States
Go to full study ↗
[8]PubMed2025
Vitamin C enhances cisplatin sensitivity in bladder cancer via 5hmC-mediated epigenetic modulation of ATF4.
Xu C, Ying W, He Y et al.. (2025). "Vitamin C enhances cisplatin sensitivity in bladder cancer via 5hmC-mediated epigenetic modulation of ATF4.". Clinical epigenetics. https://doi.org/10.1186/s13148-0
Go to full study ↗
📚 Scientific references (Chicago Author-Date) 7 refs · 1 baz

MOLECULE Per-CAS bibliography (live from 13+ databases)

Sources: db:pubmed (8)

  1. db:pubmed Kazandjieva J, Bogdanov G, Bogdanov I et al.. (2026). "Vitamins and skin aging.". Clinics in dermatology. https://doi.org/10.1016/j.clindermatol.2026.04.010 →
  2. db:pubmed Rozemeijer S, Dubois EA, de Grooth HJ et al.. (2026). "Early high-dose vitamin C for out-of-hospital cardiac arrest: the VITaCCA randomized clinical trial.". Intensive care medicine. https://doi.org/10.1007/s00134-026-08492-5 →
  3. db:pubmed Kondo Y, Sato A, Osakabe N et al.. (2026). "Vitamin C is essential for proper myogenic differentiation.". Archives of biochemistry and biophysics. https://doi.org/10.1016/j.abb.2025.110704 →
  4. db:pubmed Liu L, Zheng Z, You W et al.. (2026). "Vitamin C inhibits ACSL4 to alleviate ferro-aging in primates.". Cell metabolism. https://doi.org/10.1016/j.cmet.2026.02.010 →
  5. db:pubmed Ye Y, Zhang H, Xin Z et al.. (2026). "Vitamin C attenuates primate bone marrow aging at the molecular and progenitor level.". Cell stem cell. https://doi.org/10.1016/j.stem.2026.06.006 →
  6. db:pubmed Chen G, Jun JH, Wijshake T et al.. (2025). "Loss of vitamin C biosynthesis protects from the pathology of a parasitic infection.". Proceedings of the National Academy of Sciences of the United States of America. https://doi.org/10.1073/pnas.2517730122 →
  7. db:pubmed Xu C, Ying W, He Y et al.. (2025). "Vitamin C enhances cisplatin sensitivity in bladder cancer via 5hmC-mediated epigenetic modulation of ATF4.". Clinical epigenetics. https://doi.org/10.1186/s13148-025-02011-x →
Regulatory status of the substance
This substance is subject to regulatory requirements: hazardous waste management (BDO — national rule, Poland). Details in the "Regulatory Status (REACH/ECHA/CLP)" section and on the SDS. Regulatory information — does not restrict purchase in this store.
🧮 Stoichiometry Calculator
🧪 Chemical Data
CAS Number
50-81-7
Molecular formula
C6H8O6
Molar mass
176.12 g/mol
IUPAC name (EN)
(2R)-2-[(1S)-1,2-dihydroxyethyl]-3,4-dihydroxy-2H-furan-5-one
SMILES
C([C@@H]([C@@H]1C(=C(C(=O)O1)O)O)O)O
InChIKey
CIWBSHSKHKDKBQ-JLAZNSOCSA-N
📡 Data sources

The data in this widget comes from the following verified scientific sources:

  • PubChem — National Center for Biotechnology Information (NCBI/NIH), USA
  • ChEMBL — European Bioinformatics Institute (EMBL-EBI), UK
  • NIST WebBook — National Institute of Standards and Technology, USA

Data is cached locally for speed — the widget also works offline.

⚗️ Physicochemical properties
Temp. topnienia
190.9
Density
1.65

Source: PubChem, NIST WebBook. Last updated: 2026-09-02

🔍 External identifiers
12 of 16 ID systems75%
DatabaseIdentifierActions
CAS Registry Number50-81-7Open →
PubChem CID54670067[1]Open →
InChIKeyCIWBSHSKHKDKBQ-JLAZNSOCSA-N[1]Open →
SMILESC([C@@H]([C@@H]1C(=C(C(=O)O1)O)O)O)O[1]
EC Number200-066-2[2]Open →
DrugBankDB00126Open →
KEGG CompoundC00072Open →
HMDBHMDB0000044Open →
ChemSpider10189562[3]Open →
UNII (FDA)PQ6CK8PD0ROpen →
NSC Number (NCI)33832Open →
WikiData QIDQ199678Open →

Sources: PubChem (NIH), Wikidata SPARQL, KEGG, ChEMBL (EBI), CompTox CTX (EPA).

📚 Scientific references (Chicago Author-Date) (3 sources)
  1. PubChem. National Center for Biotechnology Information (NIH/NLM), chemical compound database. ↗ applies to: PubChem CID · InChIKey · SMILES
  2. ECHA. EC Inventory — EINECS, ELINCS, NLP and List Numbers assigned under REACH. Helsinki: European Chemicals Agency. ↗ applies to: EC Number
  3. ChemSpider. Royal Society of Chemistry, chemical structure database. ↗ applies to: ChemSpider

Further reading

Publications thematically related to this CAS. They are not the source of any value shown on this card.

Extended Bibliography (5)

  1. ★★★★★ Curated literature 💰 Paywall (probable) ✓ verified Hancock, R.D.; Viola, R.. 2007. "Biosynthesis and catabolism of L-ascorbic acid in plants." Critical Reviews in Plant Sciences. link [accessed: 2026-11-07]
  2. ★★★★★ Curated literature 💰 Paywall (probable) ✓ verified Levine, M.; Conry-Cantilena, C.; Wang, Y.; Welch, R.W.; Washko, P.W. et al.. 1996. "Vitamin C pharmacokinetics in healthy volunteers: evidence for a recommended dietary allowance." Proceedings of the National Academy of Sciences. link [accessed: 2026-11-07]
  3. ★★★★½ Curated literature 💰 Paywall (probable) ✓ verified Nováková, L.; Solich, P.; Solichová, D.. 2002. "HPLC methods for simultaneous determination of ascorbic and dehydroascorbic acids." TrAC Trends in Analytical Chemistry. link [accessed: 2026-11-07]
  4. ★★★★☆ Curated literature 💰 Paywall (probable) ✓ verified Mandl, J.; Szarka, A.; Bánhegyi, G.. 2009. "Vitamin C: update on physiology and pharmacology." British Journal of Pharmacology. link [accessed: 2026-11-07]
  5. ★★★★☆ Curated literature 💰 Paywall (probable) ✓ verified Englard, S.; Seifter, S.. 1986. "The biochemical functions of ascorbic acid." Annual Review of Nutrition. link [accessed: 2026-11-07]
📡 Spectroscopy — CAS 50-81-7
📊 Spectroscopic spectra databases — inline data 9 sources

Spectra are fetched on demand from 9 sources. Each spectrum is stored in our database — the next time it is opened there are zero requests to the external API. Download JCAMP-DX / CSV / PNG for every spectrum without searching.

IR IR (Infrared) — NIST WebBook
Public domain (US Federal)
▶ Click to load spectrum
🔗 Source
— points
📚 NIST Chemistry WebBook, SRD 69
MS (NIST) Mass Spectrum (EI) — NIST WebBook
Public domain (US Federal)
▶ Click to load spectrum
🔗 Source
— points
📚 NIST Standard Reference Database 1A
UV-Vis UV/Visible Absorption — NIST WebBook
Public domain (US Federal)
▶ Click to load spectrum
🔗 Source
— points
📚 NIST Chemistry WebBook, SRD 69
¹H NMR NMR (¹H, ¹³C) — NMRShiftDB
nmrshiftdb2 Database License
https://nmrshiftdb.nmr.uni-koeln.de/nmrshiftdbhtml/nmrshiftdb2datalicense.txt
Type of data: Type of data not reported by the source (may be measured or calculated)
These values are fetched from NMRShiftDB when you click Show; MolGod holds no record of their type.
▶ Click to load spectrum
🔗 Source
About the downloads (Type of data: Type of data not reported by the source (may be measured or calculated))
JCAMP: the NMRShiftDB file as received (JCAMP-DX 5.01 text). It is a peak list: chemical shift in ppm. MolGod adds header lines stating the type of data; the values are unchanged.
CSV: the same peak list in two columns. The second column repeats the shift value; it is not a signal intensity. Lines starting with # state the type of data.
PNG: a picture of the plot above, with the type of data written on it.
Use: where signals are expected or were reported (chemical shift positions). Not included or guaranteed: intensities, multiplicities, coupling constants, line shapes, and solvent or temperature unless stated. A predicted list is not a measurement and cannot serve as a reference spectrum for identity or purity testing. Downloads become active after Show.
— points
📚 Steinbeck C et al. (2003) J. Chem. Inf. Comput. Sci. 43(6):1733–1739 DOI: 10.1021/ci0341363
MS (MoNA) MoNA — MassBank of North America
CC-BY 4.0
▶ Click to load spectrum
🔗 Source
— points
📚 MassBank of North America (UC Davis) DOI: 10.1002/jms.1777
IR/NMR/MS (SDBS) SDBS — Spectral Database for Organic Compounds (Japan AIST)
Free for non-commercial

Reference source — no public API. Open in an external database:

🔗 IR/NMR/MS (SDBS) →
📚 SDBSWeb: https://sdbs.db.aist.go.jp (AIST, Japan)
JP Monograph Japanese Pharmacopoeia — Monographs
Reference only

Reference source — no public API. Open in an external database:

🔗 JP Monograph →
📚 Japanese Pharmacopoeia 18th Edition (2021)
WHO INN WHO — International Nonproprietary Names
WHO Model Lists (free)

Reference source — no public API. Open in an external database:

🔗 WHO INN →
📚 WHO INN Programme
DOAJ DOAJ — Directory of Open Access Journals
OA journal index (mixed)

Reference source — no public API. Open in an external database:

🔗 DOAJ →
📚 DOAJ — doaj.org

Data is fetched once (JCAMP-DX parser) and stored in the plugin's local database. No duplicate downloads, no NIST queries on subsequent openings. Licences respected (only a deep link plus our own visualisation is published).

🔬 Interactive spectra (live — NIST / MoNA / NMRShiftDB / SDBS) (2)

Data retrieved live from multiple sources (priority chain). JCAMP-DX / CSV / PNG available for download under each spectrum. ⓘ Single source ★★☆☆☆

IR — Fourier-transform infrared

Loading IR — Fourier-transform infrared…

MS — Mass spectrometry (EI 70eV)

Loading MS — Mass spectrometry (EI 70eV)…

Structural properties
ParameterValueUnit
Molecular formulaC6H8O6
Molar mass176.12g/mol
Exact mass176.03208797Da
Monoisotopic mass176.03208797Da
Topological polar surface area (TPSA)107Ų
XLogP3-1.6000
Complexity index232
Hydrogen bond donors4
Hydrogen bond acceptors6
Rotatable bonds2
Heavy atoms12
Stereocentres (atoms)2
Stereocentres (bonds)0
3D volume120.9000ų
Number of 3D conformers9
Conformer model RMSD0.6000Å
Effective 3D rotors2.4000
H-bond acceptors (3D)3
H-bond donors (3D)4
Rings (3D)1
Hydrophobic centres (3D)0
Steric quadrupole 3D (X/Y/Z)4.26 / 1.67 / 0.86Ų

Source: PubChem Computed Properties, CID 54670067

❓ Frequently asked questions (7)
What is L-Ascorbic Acid?
L-Ascorbic Acid (CAS 50-81-7) is a chemical compound with the molecular formula C6H8O6 and a molecular weight of 176.12 g/mol. The chemical data comes from PubChem (National Institutes of Health, USA).
Helpful?
What is the CAS number of L-Ascorbic Acid?
The CAS number for L-Ascorbic Acid is 50-81-7. A CAS Registry Number is the standard identifier for a chemical substance in scientific literature and in trade.
Helpful?
What is the chemical formula of L-Ascorbic Acid?
The molecular formula of L-Ascorbic Acid is C6H8O6. Its molecular weight is 176.12 g/mol.
Helpful?
What is the melting point of L-Ascorbic Acid?
The melting point of L-Ascorbic Acid is 190.6736.
Helpful?
What is the density of L-Ascorbic Acid?
The density of L-Ascorbic Acid is 1.65.
Helpful?
Is L-Ascorbic Acid hazardous?
L-Ascorbic Acid has no harmonised EU classification (CLP Annex VI). The supplier's self-classification (not legally binding) lists: H302. Read the safety data sheet before use and follow the handling precautions it states.
Helpful?
How should L-Ascorbic Acid be stored?
L-Ascorbic Acid should be stored as its safety data sheet directs — typically in a dry, cool, well-ventilated place, away from heat and from materials it is incompatible with.
Helpful?
➕ Suggest a question
Download structure files

Molecular structure files from the PubChem database (NIH). Compatible with Avogadro, PyMOL, Jmol, and ChemDraw.

Source: PubChem, National Library of Medicine (NIH). CID: 54670067

🔄 Concentration unit converter LIVE

Enter the L-Ascorbic Acid concentration in any unit — the rest will be calculated automatically.

MW: 176.12 g/mol · IUPAC Gold Book ↗

⚗️ Conversion formulas + citations (per formula)
ConversionFormulaAccuracySource
% (w/v) ↔ molarityc (mol/L) = (% × 10) / MW±0.5% rel. when density ≈ 1.0 g/mLIUPAC (2019)
millimolar ↔ molarc (mol/L) = mM × 10⁻³ExactCohen ER, Cvitaš T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor AJ (2007)
molarity (mol/L)c = n/V = (m/MW)/V±0.1% (depends on MW precision)IUPAC (2019)
parts per million (mg/L) ↔ molarityc (mol/L) = ppm / (1000 × MW); equivalently ppm = mg/L for dilute aqueous±1% (density-independent for dilute solutions)IUPAC (2019)
mg/mL ↔ molarityc (mol/L) = (mg/mL × 1000) / MW / 1000 = mg/mL / MW × 1±0.2%Cohen ER, Cvitaš T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor AJ (2007)
g/L ↔ molarityc (mol/L) = (g/L) / MW±0.1% (depends on MW precision)Cohen ER, Cvitaš T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor AJ (2007)
mmol/L ↔ molarityc (mol/L) = mmol/L × 10⁻³ExactCohen ER, Cvitaš T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor AJ (2007)
Celsius ↔ KelvinT(K) = t(°C) + 273.15±0.01 K (ITS-90 scale)BIPM (Bureau International des Poids et Mesures) (2019)
Celsius ↔ FahrenheitT(°F) = T(°C) × 9/5 + 32±0.1 °FThompson A, Taylor BN (2008)
density-corrected % ↔ molarityc (mol/L) = (%w/w × ρ × 10) / MW, ρ in g/mL±0.1% when ρ known to 3 decimalsCohen ER, Cvitaš T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor AJ (2007)
📚 Bibliography (8 authoritative sources)
  1. Thompson A, Taylor BN (2008). Guide for the Use of the International System of Units (SI). NIST Special Publication 811 · DOI: 10.6028/NIST.SP.811e2008
    → Primary SI standard for US scientific usage
  2. Cohen ER, Cvitaš T, Frey JG, Holmström B, Kuchitsu K, Marquardt R, Mills I, Pavese F, Quack M, Stohner J, Strauss HL, Takami M, Thor AJ (2007). Quantities, Units and Symbols in Physical Chemistry — The IUPAC Green Book. RSC Publishing, 3rd ed. · DOI: 10.1039/9781847557889 · ISBN: 978-0-85404-433-7
    → Canonical IUPAC guide for chemistry quantities/units
  3. BIPM (Bureau International des Poids et Mesures) (2019). The International System of Units (SI), 9th edition. BIPM · ↗
    → International SI definitions (incl. redefined kilogram 2019)
  4. ISO/IEC (2022). Quantities and units — Part 1: General. International Organization for Standardization — ISO 80000-1:2022 · ↗
    → General rules for physical quantities and units
  5. ISO/IEC (2019). Quantities and units — Part 9: Physical chemistry and molecular physics. International Organization for Standardization — ISO 80000-9:2019 · ↗
    → Concentration / molality / amount-of-substance conventions
  6. Tiesinga E, Mohr PJ, Newell DB, Taylor BN (2021). CODATA recommended values of the fundamental physical constants: 2018. Rev. Mod. Phys. 93(2):025010 · DOI: 10.1103/RevModPhys.93.025010
    → Avogadro, gas constant, molar volume (2019 SI revision)
  7. IUPAC (2019). Compendium of Chemical Terminology — the IUPAC Gold Book (online). IUPAC · DOI: 10.1351/goldbook
    → Definitions of mass fraction, molality, normality, ppm, activity
  8. Mills IM, Cvitaš T, Homann K, Kallay N, Kuchitsu K (1988). Quantities, Units and Symbols in Physical Chemistry. Blackwell Scientific Publications, 1st ed. · ISBN: 0-632-01773-5
    → Historical predecessor of IUPAC Green Book
Similar molecular structures

Loading similar structures...

🧪 Solution Preparation Wizard WIZARD
① Select concentration
② Target volume
③ Solvent

Calculations per: IUPAC Gold Book ↗, Merck ↗

Computational chemistry

Molecular descriptors

ParameterValueUnit
XLogP3 (lipophilicity)-1.60
hydrophilic (prefers aqueous phase)
Topological polar surface area (TPSA)107.00Ų
moderate polarity, good oral bioavailability
Complexity index232.0
Formal charge0
neutral molecule

Lipinski's Rule of Five

CriterionValueRuleStatus
Molar mass176.12 g/mol<= 500✓
XLogP3-1.60<= 5✓
Hydrogen bond donors4<= 5✓
Hydrogen bond acceptors6<= 10✓

The compound satisfies Lipinski's rule — potentially good oral bioavailability.

3D pharmacophore features

ParameterValueUnit
H-bond acceptors (3D)3
H-bond donors (3D)4
Rings (3D)1
Hydrophobic centres (3D)0
Anionic centres (3D)0
Cationic centres (3D)0

Shape and volume

ParameterValueUnit
3D volume120.90ų
Rotatable bonds2
Heavy atoms12

The TPSA interpretations and Lipinski's rule are empirical rules for small-molecule oral drugs (Lipinski 1997, Veber 2002, Kelder 1999). They are not an assessment of the absorption or toxicity of this substance — safety data are given in the Safety Data Sheet.

Source: PubChem Computed Properties, CID 54670067

🛡️ Safety — CAS 50-81-7
Data limitations notice. The safety information on this page is for reference only and does not replace a full safety data sheet (SDS). Before using the product, consult the manufacturer's current safety data sheet and the GHS/CLP guidance. The CLP classification applies to the pure bulk substance, not to commercial formulations.

GHS/CLP classification — Regulation (EC) No 1272/2008 + UN GHS Rev. 9 (2021).

⚠ Warning
GHS07 — Irritant / harmful
GHS07 Irritant / harmful

🚨 Hazard statements (H)

  • H302 — Harmful if swallowed

🛡 Precautionary statements (P)

  • P264 — Wash thoroughly after handling
  • P270 — Do not eat, drink or smoke when using this product
  • P301+P312 — IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
  • P330 — Rinse mouth
  • P501 — Dispose of contents/container to an approved waste collection point

⚠ Classification based on a consensus of sources (PubChem / supplier notifications) — not verified against the harmonised classification in Annex VI (CLP). The scope of hazards may be broader than the official classification; verify against the supplier's current safety data sheet before use.

Translations: CLP Regulation (EC) 1272/2008, Annexes III and IV. Data: PubChem/NLM.

📚 Consolidated scientific references — Chicago Author-Date 10 sources

References collected from all Safety Hub tabs. CAS: 50-81-7 · PubChem ↗

  1. Parlament Europejski i Rada UE. 2008. "Regulation (EC) nr 1272/2008 w sprawie klasyfikacji, oznakowania i pakowania substancji (CLP)." Dz.Urz. UE L 353. [↗] GHS, Regulations
  2. United Nations Economic Commission for Europe (UNECE). 2021. "Globally Harmonized System of Classification and Labelling of Chemicals (GHS), Ninth Revised Edition." United Nations, Geneva. [↗] GHS
  3. Goldfrank, Lewis R., Robert S. Hoffman, Mary Ann Howland, et al.. 2019. "Goldfrank's Toxicologic Emergencies, 11th ed.." McGraw-Hill Education, New York. ISBN 978-1-25-985961-8. First aid, Toxicology
  4. National Institute for Occupational Safety and Health (NIOSH). 2023. "NIOSH Pocket Guide to Chemical Hazards (DHHS Publ. 2005-149)." U.S. Department of Health and Human Services / CDC, Cincinnati, OH. [↗] First aid, PPE, Toxicology
  5. European Committee for Standardization (CEN). 2016. "EN 374-1:2016 — Protective gloves against dangerous chemicals and micro-organisms." CEN, Brussels. [↗] PPE
  6. UNECE. 2023. "European Agreement Concerning the International Carriage of Dangerous Goods by Road (ADR 2025)." United Nations, Geneva. [↗] Disposal, Regulations
  7. National Fire Protection Association (NFPA). 2022. "NFPA 400 — Hazardous Materials Code." NFPA, Quincy, MA. [↗] Storage
  8. Urben, P.G. (ed.). 2017. "Bretherick's Handbook of Reactive Chemical Hazards, 8th ed.." Butterworth-Heinemann / Elsevier, Oxford. [↗] Storage
  9. Ministerstwo Klimatu i Środowiska RP. 2023. "Baza danych o produktach i opakowaniach oraz o gospodarce odpadami (BDO)." Ministerstwo Klimatu i Środowiska, Warszawa. National rules — Poland [↗] Disposal
  10. International Agency for Research on Cancer (IARC / WHO). 2024. "IARC Monographs on the Identification of Carcinogenic Hazards to Humans — List of Classifications." WHO, Lyon. [↗] Toxicology

Tabs with their own references (Emergency, PPE, Storage, Waste) contain additional bibliographic entries within their respective sections.

📈 Analytical statistics (t-test · RSD · Grubbs · Q-Dixon) ICH Q2

Paste a series of replicate measurements (CSV, or one number per line). The calculator computes the mean, standard deviation and 95% CI, and detects outliers (Grubbs + Dixon Q).

Separator: comma, space, tab, new line. Minimum 3 measurements.
📐 Statistical formulas
  • x̄ = Σxᵢ / n — arithmetic mean
  • s² = Σ(xᵢ - x̄)² / (n-1) — sample variance
  • s = √s² — standard deviation
  • RSD% = (s / x̄) × 100% — relative standard deviation
  • CI₉₅ = x̄ ± t(0.05, n-1) × s / √n — Student's t
  • G = |xᵢ - x̄| / s — Grubbs' test
  • Q = |xsuspect - xnearest| / |xmax - xmin| — Dixon Q-test

Source: ICH Q2(R2) Validation of Analytical Procedures · ICH PDF ↗

🧪 Buffer Recipe Calculator UNIQUE
References: pKa values from Goldberg NIST 81 · CRC Handbook 100th ed. · Stoll & Blanchard 1990 (DOI)

Choose a buffer from the list of 20 popular systems → enter the target pH → get an exact recipe with the masses to weigh out.

Step 1: Choose a buffer system

📜 Recipe history (last 10)
📅 Project Planner — Lab Experiment Manager NEW

Plan your entire laboratory project: add experiments with reagents, replicates, and duration. You'll get a Gantt chart, a shopping list (with links to the store!), a budget with a 10% margin, and a GHS risk matrix.

🧪 Solubility and solvent compatibility
Molecule
L-Ascorbic Acid
Formula
C6H8O6
logP
-1.85
Mass (g/mol)
176.12
Polarity
Hydrophilic (polar)

⚠️ HSP estimate (literature / group contribution). Indicative data — does not replace experimental studies.

Ra < R₀ = good miscibility · Ra < 1,5×R₀ = borderline · above = poor (R₀ — radius of the Hansen sphere of this molecule) For this molecule R₀ = 18..

Solvent Compat. Ra Visual GC-MS HPLC Applications References
Water (H₂O)333 g/L (measured)14.1
✗ NoA (aqueous) (RP)
buffercell cultureanalyticalextraction (hydrophilic)
Ethanol (EtOH)20 g/L (measured)14.1
✗ NoA/B modifier (RP/NP)
extractionspectroscopy (UV-Vis)synthesisHPLC modifier
Methanol (MeOH)+ Good11.7
✗ NoA/B (RP) (RP)
HPLC (eluent)LC-MSKarl FischerUV-transparent to 205 nm
Acetone~ Avg.24.9
✗ NoB modifier (NP)
GC headspacecrystallisationdegreasingsynthesis
Acetonitrile (ACN)~ Avg.25.9
✗ NoB (RP) (RP)
HPLC eluent (gold standard)LC-MS (low UV cut-off, 190 nm)peptide analysis
DMSO~ Avg.20.5
✗ NoN/A (N/A)
NMR (d6-DMSO)cell biology (cryopreservation)drug deliverysynthesis
THF~ Avg.24.5
✗ NoB (NP) (NP)
GPC/SEC (polymer analysis)Grignard synthesisorganometallics
DCM (CH₂Cl₂)~ Avg.25.7
✓ YesB (NP) (NP)
extractionNP-HPLCGC-MScrystallisation (anti-solvent)
Chloroform (CHCl₃)− Poor27.3
✓ YesN/A (toxic) (N/A)
NMR (CDCl3)lipid extraction (Folch method)NP-TLC
Hexane− Poor34.7
✓ YesA (NP) (NP)
NP-HPLCoil extraction (lipids)GC-MSTLC (NP)
Toluene− Poor31.3
✓ YesB (NP) (NP)
NMR (d8-toluene)synthesisazeotropic drying (Dean-Stark)
📚 Scientific references for solvents (Chicago Author-Date) — click to expand

11 solvents · 54 full citations (NIST/CRC/IARC/Hansen/Reichardt/Smallwood/Wypych/Armarego/Snyder/GESTIS) — below.

Water (H₂O)
  1. NIST — NIST Chemistry WebBook — Water (CAS 7732-18-5)
  2. CRC — CRC Handbook of Chemistry and Physics, 104th ed., Sec. 8 (Properties of Water)
  3. IAPWS — IAPWS Release on Static Dielectric Constant of Water
  4. Reichardt 2011 — Solvents and Solvent Effects in Organic Chemistry
  5. GESTIS — GESTIS Substance Database — Water
Ethanol (EtOH)
  1. NIST — NIST Chemistry WebBook — Ethanol (CAS 64-17-5)
  2. CRC — CRC Handbook — Ethanol physical constants
  3. Snyder & Kirkland — Modern Liquid Chromatography — Ethanol eluotropic
  4. Smallwood — Handbook of Organic Solvent Properties — Ethanol
  5. GESTIS — GESTIS Substance Database — Ethanol
Methanol (MeOH)
  1. NIST — NIST Chemistry WebBook — Methanol (CAS 67-56-1)
  2. CRC — CRC Handbook — Methanol physical constants
  3. Snyder & Kirkland — Modern Liquid Chromatography — MeOH eluotropic, eo=0.95
  4. GESTIS — GESTIS Substance Database — Methanol
Acetone
  1. NIST — NIST Chemistry WebBook — Acetone (CAS 67-64-1)
  2. CRC — CRC Handbook — Acetone physical & thermodynamic constants
  3. Hansen 2007 — Hansen Solubility Parameters — Acetone (dD=15.5, dP=10.4, dH=7.0)
  4. Smallwood — Handbook of Organic Solvent Properties — Acetone
  5. GESTIS — GESTIS Substance Database — Acetone
Acetonitrile (ACN)
  1. NIST — NIST Chemistry WebBook — Acetonitrile (CAS 75-05-8)
  2. CRC — CRC Handbook — Acetonitrile constants
  3. Snyder & Kirkland — Modern Liquid Chromatography — ACN gold-standard HPLC eluent
  4. Reichardt 2011 — Solvents and Solvent Effects — ACN dipolar aprotic
  5. GESTIS — GESTIS Substance Database — Acetonitrile
DMSO
  1. NIST — NIST Chemistry WebBook — DMSO (CAS 67-68-5)
  2. Wypych 2019 — Handbook of Solvents Vol. 1 — DMSO comprehensive properties
  3. Hansen 2007 — HSP — DMSO (dD=18.4, dP=16.4, dH=10.2)
  4. Reichardt 2011 — Solvents and Solvent Effects — DMSO E_T(30)=45.1, dipolar aprotic
  5. GESTIS — GESTIS Substance Database — DMSO
THF
  1. NIST — NIST Chemistry WebBook — THF (CAS 109-99-9)
  2. Armarego 2009 — Purification of Laboratory Chemicals — THF drying & peroxide test
  3. Hansen 2007 — Hansen Solubility Parameters — THF (dD=16.8, dP=5.7, dH=8.0)
  4. Smallwood — Handbook of Organic Solvent Properties — THF
  5. GESTIS — GESTIS Substance Database — Tetrahydrofuran
DCM (CH₂Cl₂)
  1. NIST — NIST Chemistry WebBook — Dichloromethane (CAS 75-09-2)
  2. IARC 71 — IARC Monograph 71 — DCM (Group 2A carcinogen)
  3. Hansen 2007 — Hansen Solubility Parameters — DCM (dD=18.2, dP=6.3, dH=6.1)
  4. Reichardt 2011 — Solvents and Solvent Effects — DCM polarity index
  5. GESTIS — GESTIS Substance Database — Dichloromethane
Chloroform (CHCl₃)
  1. NIST — NIST Chemistry WebBook — Chloroform (CAS 67-66-3)
  2. IARC 73 — IARC Monograph 73 — Chloroform (Group 2B carcinogen)
  3. Hansen 2007 — Hansen Solubility Parameters — CHCl3 (dD=17.8, dP=3.1, dH=5.7)
  4. Reichardt 2011 — Solvents and Solvent Effects — CHCl3 H-bond donor strength
  5. GESTIS — GESTIS Substance Database — Chloroform
n-Hexane
  1. NIST — NIST Chemistry WebBook — n-Hexane (CAS 110-54-3)
  2. ATSDR n-Hexane — ATSDR Toxicological Profile for n-Hexane — peripheral neuropathy (n-hexane is NOT an IARC carcinogen)
  3. Hansen 2007 — Hansen Solubility Parameters — n-Hexane (dD=14.9, dP=0, dH=0)
  4. Snyder & Kirkland — Modern Liquid Chromatography — n-Hexane NP standard, eo=0.00
  5. GESTIS — GESTIS Substance Database — n-Hexane
Toluene
  1. NIST — NIST Chemistry WebBook — Toluene (CAS 108-88-3)
  2. IARC 71 — IARC Monograph 71 — Toluene
  3. Hansen 2007 — Hansen Solubility Parameters — Toluene (dD=18.0, dP=1.4, dH=2.0)
  4. Smallwood — Handbook of Organic Solvent Properties — Toluene
  5. GESTIS — GESTIS Substance Database — Toluene
Solubility theory (applied in compatibility prediction):
  1. Yalkowsky, Samuel H., and Shri C. Valvani. 1980. "Solubility and Partitioning I: Solubility of Nonelectrolytes in Water." Journal of Pharmaceutical Sciences 69 (8): 912–922. https://doi.org/10.1002/jps.2600690814 — General Solubility Equation (GSE): logS = 0.5 − logP − 0.01(MP−25).
  2. Hansen, Charles M. 2007. Hansen Solubility Parameters: A User's Handbook. 2nd ed. CRC Press. https://doi.org/10.1201/9781420006834 — HSP triplet (dD, dP, dH) + Ra formula.
  3. Stefanis, E., and C. Panayiotou. 2008. "Prediction of Hansen Solubility Parameters with a New Group-Contribution Method." Int J Thermophys 29: 568–585. https://doi.org/10.1007/s10765-008-0415-z
  4. Reichardt, Christian, and Thomas Welton. 2011. Solvents and Solvent Effects in Organic Chemistry. 4th ed. Wiley-VCH. https://doi.org/10.1002/9783527632220 — E_T(30) polarity scale, solvatochromism.
  5. Snyder, Lloyd R., Joseph J. Kirkland, and John W. Dolan. 2010. Introduction to Modern Liquid Chromatography. 3rd ed. Wiley. https://doi.org/10.1002/9780470508183 — Eluotropic series, polarity index.
  6. Van Krevelen, D. W., and K. Te Nijenhuis. 2009. Properties of Polymers. 4th ed. Elsevier. https://doi.org/10.1016/B978-0-08-054819-7.X0001-5 — Hoftyzer–Van Krevelen group contribution for dD/dP/dH from SMILES.
  7. Marcus, Yizhak. 1998. The Properties of Solvents. Wiley Series in Solution Chemistry, Vol. 4. ISBN 9780471983699 — Complete tabular set of 250+ solvents (ε, μ, donicity, acceptor numbers).
  8. PubChem Compound Database — CAS 50-81-7 lookup ↗ — logP (XLogP3), water solubility experimental + predicted.

Full bibliography in the REFERENCES accordion (at the bottom of the page) — Chicago Manual of Style 17th ed., Author-Date.

⚗️ Check reaction compatibility
2 0 0
Health: 2/4
Flammability: 0/4
Reactivity: 0/4
Per NFPA 704 / calculated from H-codes

Check whether L-Ascorbic Acid is compatible with another reagent

📦 Storage compatibility matrix
Acids Bases Oxidizers Flammable Toxic Gazy
Acids ✓ ✗ ✗ ✗ ⚠ ✗
Bases ✗ ✓ ⚠ ⚠ ⚠ ⚠
Oxidizers ✗ ⚠ ✓ ✗ ⚠ ✗
Flammable ✗ ⚠ ✗ ✓ ⚠ ✗
Toxic ⚠ ⚠ ⚠ ⚠ ✓ ⚠
Gazy ✗ ⚠ ✗ ✗ ⚠ ✓
✓ Can be stored together · ⚠ Caution · ✗ Do NOT store together · OSHA Chemical Segregation ↗

Compatibility data from: Bretherick's Handbook (7th ed.) ↗, GESTIS ↗, ECHA REACH ↗, NFPA 704 ↗

🧮 Laboratory calculators (8)
Dilution (C₁V₁=C₂V₂)
Molarity (M=n/V)
pH Buffer (Henderson-Hasselbalch)
Beer-Lambert (A=εcl)
Mass → Moles
Concentration % → M
ppm → mg/L
Temperature C↔F↔K

Verified formulas: IUPAC Gold Book ↗, DOI ↗

📊 Spectroscopic Databases
📋 Laboratory protocol generator

Protocol generated based on: GHS SDS, Aldrich Lab Guide ↗

🏷️ Label generator (QR)
Ascorbic acid• l-ascorbic acid / vitamin C• IUPAC: (2R)-2-[(1S)-1,2-dihydroxyethyl]-3,4-dihydroxy-2H-furan-5-one• CAS: 50-81-7• EC: 200-066-2• Formula: C6H8O6• Mass: 176.12 g/molWARNINGGHS HAZARD STATEMENTS:(supplier self-classification — non-binding)H302: Harmful if swallowedP301+P312 P330 P501 P264 P270FOR LABORATORY USE ONLY!Nonsensia Ltd124-128 City Road, EC1V 2NX Londonpure@molgod.orgmolgod.orgBatch No.: Net Mass:
🧪 Solution preparation assistant (Smart Prep)

Enter what you want to prepare — I'll generate an SOP

Examples below — click to insert:
Preset recipes:
📚 Scientific literature overview — CAS 50-81-7
⭐ Key findings (scientific literature) 11 publications
🏆 CAS 50-81-7 — multi-criteria ranking (W12): 30% citations · 20% recency · 20% topic · 15% historical · 15% open access.
  1. #1
    Carr, A.C.; Maggini, S. (2017) · Nutrients
    Why it matters: Must-cite (canon) · high impact (1490 citations)
    SCORE 13.87 Pharmacology MUST-CITE Citations: 1490 DOI ↗
  2. #2
    Levine, M.; Conry-Cantilena, C.; Wang, Y.; Welch, R.W.; Washko, P.W. et al. (1996) · Proceedings of the National Academy of Sciences
    Why it matters: Must-cite (canon) · high impact (1320 citations)
    SCORE 13.21 Mechanism MUST-CITE Citations: 1320 DOI ↗
  3. #3
    Padayatty, S.J.; Katz, A.; Wang, Y.; Eck, P.; Kwon, O. et al. (2003) · Journal of the American College of Nutrition
    Why it matters: Must-cite (canon) · high impact (1210 citations) · review
    SCORE 11.5 Review MUST-CITE Citations: 1210 DOI ↗
  4. #4
    Reichstein, T.; Grüssner, A.; Oppenauer, R. (1933) · Helvetica Chimica Acta
    Why it matters: Must-cite (canon) · high impact (1100 citations) · historical paper (1933)
    SCORE 11.38 Historical MUST-CITE Citations: 1100 DOI ↗
  5. #5
    Pauling, L. (1970) · Proceedings of the National Academy of Sciences
    Why it matters: Must-cite (canon) · 860 citations
    SCORE 11.06 Historical MUST-CITE Citations: 860 DOI ↗
  6. #6
    Englard, S.; Seifter, S. (1986) · Annual Review of Nutrition
    Why it matters: Must-cite (canon) · 890 citations · review
    SCORE 10.65 Review MUST-CITE Citations: 890 DOI ↗
  7. #7
    Ngo, B.; Van Riper, J.M.; Cantley, L.C.; Yun, J. (2019) · Nature Reviews Cancer
    Why it matters: Must-cite (canon) · 380 citations
    SCORE 10.44 Pharmacology MUST-CITE Citations: 380 DOI ↗
  8. #8
    Mandl, J.; Szarka, A.; Bánhegyi, G. (2009) · British Journal of Pharmacology
    Why it matters: Must-cite (canon) · 540 citations · review
    SCORE 10 Review MUST-CITE Citations: 540 DOI ↗
  9. #9
    Nováková, L.; Solich, P.; Solichová, D. (2002) · TrAC Trends in Analytical Chemistry
    Why it matters: Must-cite (canon) · 290 citations
    SCORE 8.99 Analytics MUST-CITE Citations: 290 DOI ↗
  10. #10
    Hancock, R.D.; Viola, R. (2007) · Critical Reviews in Plant Sciences
    Why it matters: Must-cite (canon) · 260 citations
    SCORE 8.85 Industrial MUST-CITE Citations: 260 DOI ↗
  11. #11
    Padayatty, S.J.; Sun, A.Y.; Chen, Q.; Espey, M.G.; Drisko, J.; Levine, M. (2010) · PLoS ONE
    Why it matters: Must-cite (canon) · 420 citations
    SCORE 7.87 Pharmacology MUST-CITE Citations: 420 DOI ↗

Why this page can be checked

Identity

CAS, EC and molecular formula, resolved across the identifier systems a buyer uses. The count of systems resolved is shown, so you can see how well characterised this substance is rather than assuming.

Data

Every physicochemical value carries the source it came from and the date that source was read. Open any of them.

Classification

Read against the harmonised entry where one exists, with the index number stated. Self-classification is shown separately and labelled.

Regulatory

Inventory, restriction, authorisation and candidate-list status, each stated individually. Where a status is not established, this page says so — it never says no restrictions apply.

Documentation

Which documents exist, at what review level, in which languages, and when each was issued.

Supplier

Who is selling this, and what they have published about themselves.

Nothing on this page is a certification. It is a record you can audit.

Two guarantees, both with their limits stated

The Gap Report Guarantee

If the available evidence cannot support a defensible document for your CAS number and product specification, we will not invent the missing values. You receive a documented gap report and choose: a refund, store credit, or the report on its own.

A visible gap is worth more than a plausible number, because the plausible number is the one that fails when somebody checks it.

The Re-issue Promise

If a signed card is rejected by an authority or by a customer’s compliance officer on one of the points we checked and reported as passed, we re-issue it corrected at no charge and credit the original fee.

This covers the checks we performed and named. It does not cover registration status, tonnage, or your role in the supply chain — those are not ours to hold, and a guarantee that pretended otherwise would be worth nothing.

Ascorbic acid — CAS 50-81-7. Prepared from the supplier’s public catalogue; not verified against their internal data.

⚗️ Ionization as a function of pH (Henderson-Hasselbalch)

Type: Acid · pKa: 4.1 · pKa2: 11.6

024681012140%50%100%% ionized% non-ionizedpH
pH% ionized% non-ionized
00.0 %100.0 %
20.8 %99.2 %
444.3 %55.7 %
698.8 %1.2 %
8100.0 %0.0 %
10100.0 %0.0 %
12100.0 %0.0 %
14100.0 %0.0 %
Sources for this substance (10)
  • CRC Handbook 91st ed.
    Lide, David R., ed. 2010. CRC Handbook of Chemistry and Physics. 91st ed. Boca Raton, FL: CRC Press.
  • CRC Handbook 105th ed.
    Haynes, William M., David R. Lide, and Thomas J. Bruno, eds. 2024. CRC Handbook of Chemistry and Physics. 105th ed. Boca Raton, FL: CRC Press.
  • NIST WebBook — link
    Linstrom, Peter J., and William G. Mallard, eds. 2024. NIST Chemistry WebBook. NIST Standard Reference Database Number 69. Gaithersburg, MD: National Institute of Standards and Technology.
  • PubChem CID 54670067 — link
    Kim, Sunghwan, Jie Chen, Tiejun Cheng, Asta Gindulyte, Jia He, Siqian He, Qingliang Li, et al. 2023. "PubChem 2023 update." Nucleic Acids Research 51 (D1): D1373-D1380. PubChem CID 54670067.
  • DrugBank DB00126 — link
    Knox, Craig, Mike Wilson, Christen M. Klinger, Mark Franklin, Eponine Oler, Alex Wilson, Allison Pon, et al. 2024. "DrugBank 6.0: the DrugBank Knowledgebase for 2024." Nucleic Acids Research 52 (D1): D1265-D1275. DrugBank ID DB00126.
  • ChEMBL CHEMBL196 — link
    Zdrazil, Barbara, Eloy Felix, Fiona Hunter, Emma J. Manners, James Blackshaw, Sybilla Corbett, Marleen de Veij, et al. 2024. "The ChEMBL Database in 2023." Nucleic Acids Research 52 (D1): D1180-D1192. ChEMBL ID CHEMBL196.
  • KEGG COMPOUND C00072 — link
    Kanehisa, Minoru, Miho Furumichi, Yoko Sato, Masayuki Kawashima, and Mari Ishiguro-Watanabe. 2023. "KEGG for taxonomy-based analysis of pathways and genomes." Nucleic Acids Research 51 (D1): D587-D592.
  • IUPAC
    Serjeant, E. P., and Boyd Dempsey. 1979. Ionisation Constants of Organic Acids in Aqueous Solution. IUPAC Chemical Data Series No. 23. Oxford: Pergamon Press.
  • NIST
    Goldberg, Robert N., Nand Kishore, and Rebecca Lennen. 2002. "Thermodynamic Quantities for the Ionization Reactions of Buffers." Journal of Physical and Chemical Reference Data 31 (2): 231-370.
Method Bibliography (Chicago)
  • Henderson, L. J. 1908. "Concerning the Relationship between the Strength of Acids and Their Capacity to Preserve Neutrality." American Journal of Physiology 21 (4): 173-179.
  • Hasselbalch, K. A. 1917. "Die Berechnung der Wasserstoffzahl des Blutes aus der freien und gebundenen Kohlensäure desselben." Biochemische Zeitschrift 78: 112-144.
  • Po, Henry N., and N. M. Senozan. 2001. "The Henderson-Hasselbalch Equation: Its History and Limitations." Journal of Chemical Education 78 (11): 1499-1503.
  • Avdeef, Alex. 2012. "Absorption and Drug Development: Solubility, Permeability, and Charge State." 2nd ed. Wiley.
  • Avdeef, Alex. 2007. "Solubility of sparingly-soluble ionizable drugs." Advanced Drug Delivery Reviews 59 (7): 568-590.
  • Volgyi, Gergely, et al. 2007. "Potentiometric and spectrophotometric pKa determination of water-insoluble compounds." Analytica Chimica Acta 583 (2): 418-428.
  • Fini, Adamo, Giuseppe Fazio, and Giuseppina Feroci. 1997. "Solubility and solubilization properties of non-steroidal anti-inflammatory drugs." Pharmaceutica Acta Helvetiae 70 (4): 305-318.
  • Mauger, John W., Anthony N. Paruta, and Robert J. Gerraughty. 1972. "Solubilities of sulfadiazine, sulfisomidine, and sulfadimethoxine." Journal of Pharmaceutical Sciences 61 (1): 94-97.
  • Lyman, Warren J., William F. Reehl, and David H. Rosenblatt. 1990. "Handbook of Chemical Property Estimation Methods." American Chemical Society.
  • Marcus, Yizhak. 1998. "The Properties of Solvents." Wiley.
  • Serjeant, E. P., and Boyd Dempsey. 1979. Ionisation Constants of Organic Acids in Aqueous Solution. IUPAC Chemical Data Series No. 23. Oxford: Pergamon Press.
  • Perrin, Douglas D. 1965. Dissociation Constants of Organic Bases in Aqueous Solution. IUPAC. London: Butterworths.
  • Goldberg, Robert N., Nand Kishore, and Rebecca Lennen. 2002. "Thermodynamic Quantities for the Ionization Reactions of Buffers." Journal of Physical and Chemical Reference Data 31 (2): 231-370.
  • Rumble, John R., Thomas J. Bruno, Maria J. Doa, and Donald R. Burgess, eds. 2024. CRC Handbook of Chemistry and Physics. 105th ed. Boca Raton, FL: CRC Press.
  • Lide, David R., ed. 2010. CRC Handbook of Chemistry and Physics. 91st ed. Boca Raton, FL: CRC Press.
  • Kim, Sunghwan, Jie Chen, Tiejun Cheng, Asta Gindulyte, Jia He, Siqian He, Qingliang Li, et al. 2023. "PubChem 2023 update." Nucleic Acids Research 51 (D1): D1373-D1380.
  • Knox, Craig, Mike Wilson, Christen M. Klinger, Mark Franklin, Eponine Oler, Alex Wilson, Allison Pon, et al. 2024. "DrugBank 6.0: the DrugBank Knowledgebase for 2024." Nucleic Acids Research 52 (D1): D1265-D1275.
  • Zdrazil, Barbara, Eloy Felix, Fiona Hunter, Emma J. Manners, James Blackshaw, Sybilla Corbett, Marleen de Veij, et al. 2024. "The ChEMBL Database in 2023." Nucleic Acids Research 52 (D1): D1180-D1192.
  • Kanehisa, Minoru, Miho Furumichi, Yoko Sato, Masayuki Kawashima, and Mari Ishiguro-Watanabe. 2023. "KEGG for taxonomy-based analysis of pathways and genomes." Nucleic Acids Research 51 (D1): D587-D592.
  • Linstrom, Peter J., and William G. Mallard, eds. 2024. NIST Chemistry WebBook. NIST Standard Reference Database Number 69. Gaithersburg, MD: National Institute of Standards and Technology.
  • Nelson, David L., and Michael M. Cox. 2017. Lehninger Principles of Biochemistry. 7th ed. New York: W. H. Freeman.
📄 Certificates of Analysis (CoA) CAS 50-81-7 none

No certificates for this product in the database.

📚 Scientific references (Chicago Author-Date) — click to expand

Batch management and laboratory certification standards — 13 independent sources (ICH Q1/Q3/Q6/Q7/Q10 + ISO 17025 + WHO TRS + 21 CFR 211 + EMA + USP + Ph.Eur. + PIC/S + IPEC-PQG).

  1. International Council for Harmonisation (ICH). 2000. "Q7 Good Manufacturing Practice Guide for Active Pharmaceutical Ingredients." ICH Expert Working Group. [link ↗] — GMP for APIs — adopted by EMA, FDA, MHLW
  2. International Organization for Standardization. 2017. "ISO/IEC 17025:2017 General requirements for the competence of testing and calibration laboratories." ISO. [link ↗] — Lab accreditation standard underpinning every CoA
  3. World Health Organization. 2010. "WHO Good Manufacturing Practices for Pharmaceutical Products: Main Principles (WHO Technical Report Series No. 957, Annex 3)." WHO Press. [link ↗] — WHO TRS No. 957 — global reference for GMP
  4. International Council for Harmonisation (ICH). 2003. "ICH Q1A(R2): Stability Testing of New Drug Substances and Products." International Council for Harmonisation. [link ↗] — Source for batch shelf-life and retest dating
  5. International Council for Harmonisation (ICH). 2006. "ICH Q3A(R2): Impurities in New Drug Substances." ICH. [link ↗]
  6. International Council for Harmonisation (ICH). 1999. "ICH Q6A: Specifications for New Drug Substances and Products." ICH. [link ↗] — CoA acceptance-criteria specification standard
  7. International Council for Harmonisation (ICH). 2008. "ICH Q10: Pharmaceutical Quality System." ICH. [link ↗]
  8. U.S. Food and Drug Administration. 2024. "21 CFR Part 211: Current Good Manufacturing Practice for Finished Pharmaceuticals." US Code of Federal Regulations. [link ↗] — US legal mandate (Subpart J — Records and Reports)
  9. European Medicines Agency. 2014. "Guideline on Process Validation for Finished Products — Information and Data to Be Provided EMA/CHMP/CVMP/QWP/BWP/70278/2012." European Medicines Agency. [link ↗]
  10. United States Pharmacopeial Convention. 2024. "United States Pharmacopeia and National Formulary, USP 47-NF 42." USP. [link ↗]
  11. European Pharmacopoeia Commission. 2024. "European Pharmacopoeia 11th Edition." Council of Europe — EDQM. [link ↗]
  12. Pharmaceutical Inspection Co-operation Scheme (PIC/S). 2021. "Guide to Good Manufacturing Practice for Medicinal Products PE 009-15." PIC/S Secretariat, Geneva. [link ↗] — Cross-recognized GMP for 54 inspectorates worldwide
  13. International Pharmaceutical Excipients Council (IPEC) and Pharmaceutical Quality Group (PQG). 2017. "Joint IPEC-PQG Good Manufacturing Practices Guide for Pharmaceutical Excipients." IPEC-Americas. [link ↗] — Excipient-grade CoA standard for non-API ingredients
📈 UV-VIS spectrum predictor (200-400 nm) λmax 243 nm
0%25%50%75%100%200250300350400243 nmA = ε·c·lA / Aₘₐₓ (%)
CompoundAscorbic acid (Vitamin C)
λmax243 nm
λmin220 nm
εmax (M⁻¹·cm⁻¹)7,700
Solvent (query)water
Solvent (reference)water (pH 2)
Concentration (M)1e-4
Path length (cm)1
Curve FWHM46 nm

Model: Gaussian curve centered at λmax, scaled with the Beer-Lambert law A = ε · c · l. Transmittance T = 10^(-A) · 100%.

📚 Scientific references (Chicago Author-Date)
  1. Kazandjieva J, Bogdanov G, Bogdanov I et al.. (2026). "Vitamins and skin aging.". Clinics in dermatology. https://doi.org/10.1016/j.clindermatol.2026.04.010 [DOI]
  2. Rozemeijer S, Dubois EA, de Grooth HJ et al.. (2026). "Early high-dose vitamin C for out-of-hospital cardiac arrest: the VITaCCA randomized clinical trial.". Intensive care medicine. https://doi.org/10.1007/s00134-026-08492-5 [DOI]
  3. Kondo Y, Sato A, Osakabe N et al.. (2026). "Vitamin C is essential for proper myogenic differentiation.". Archives of biochemistry and biophysics. https://doi.org/10.1016/j.abb.2025.110704 [DOI]
  4. Liu L, Zheng Z, You W et al.. (2026). "Vitamin C inhibits ACSL4 to alleviate ferro-aging in primates.". Cell metabolism. https://doi.org/10.1016/j.cmet.2026.02.010 [DOI]
  5. Ye Y, Zhang H, Xin Z et al.. (2026). "Vitamin C attenuates primate bone marrow aging at the molecular and progenitor level.". Cell stem cell. https://doi.org/10.1016/j.stem.2026.06.006 [DOI]
  6. Chen G, Jun JH, Wijshake T et al.. (2025). "Loss of vitamin C biosynthesis protects from the pathology of a parasitic infection.". Proceedings of the National Academy of Sciences of the United States of America. https://doi.org/10.1073/pnas.2517730122 [DOI]
  7. Xu C, Ying W, He Y et al.. (2025). "Vitamin C enhances cisplatin sensitivity in bladder cancer via 5hmC-mediated epigenetic modulation of ATF4.". Clinical epigenetics. https://doi.org/10.1186/s13148-025-02011-x [DOI]
  8. Linstrom, Peter J., and William G. Mallard, eds. 2023. NIST Chemistry WebBook, NIST Standard Reference Database Number 69. Gaithersburg, MD: National Institute of Standards and Technology. [DOI]
  9. Mayerhöfer, Thomas G., Samir Pahlow, and Jürgen Popp. 2020. "The Bouguer-Beer-Lambert Law: Shining Light on the Obscure." ChemPhysChem 21 (18): 2029-2046. [DOI]
  10. Skoog, Douglas A., F. James Holler, and Stanley R. Crouch. 2017. Principles of Instrumental Analysis. 7th ed. Boston: Cengage Learning. ISBN 978-1-305-57721-3.
  11. Lindon, John C., George E. Tranter, and David W. Koppenaal, eds. 2017. "Encyclopedia of Spectroscopy and Spectrometry." 3rd ed. Amsterdam: Academic Press. ISBN 978-0-12-803224-4.
  12. Field, Leslie D., Sev Sternhell, and John R. Kalman. 2013. "Organic Structures from Spectra." 5th ed. Chichester: Wiley. ISBN 978-1-119-96582-6.
  13. Reusch, William. 2013. "Virtual Textbook of Organic Chemistry: Spectroscopy." East Lansing, MI: Michigan State University.
  14. Lampman, Gary M., Donald L. Pavia, George S. Kriz, and James R. Vyvyan. 2010. "Spectroscopy." 4th ed. Belmont, CA: Cengage Learning. ISBN 978-0-495-88992-9.
  15. Kalsi, P. S. 2010. "Spectroscopy of Organic Compounds." 6th ed. New Delhi: New Age International. ISBN 978-81-224-2032-9.
  16. Williams, Dudley H., and Ian Fleming. 2008. "Spectroscopic Methods in Organic Chemistry." 6th ed. London: McGraw-Hill. ISBN 978-0-07-711559-0.
  17. Sadek, Paul C. 2002. The HPLC Solvent Guide. 2nd ed. Hoboken: Wiley. ISBN 978-0-471-41242-2.
  18. Banwell, Colin N., and Elaine M. McCash. 1994. "Fundamentals of Molecular Spectroscopy." 4th ed. London: McGraw-Hill. ISBN 978-0-07-707976-1.
  19. Perkampus, Heinz-Helmut. 1992. UV-VIS Spectroscopy and Its Applications. Berlin: Springer. https://doi.org/10.1007/978-3-642-77477-5.
  20. Fieser, Louis F. 1949. "Extension of Woodward's Rules for Prediction of Conjugated Diene Absorption." Journal of the American Chemical Society 71 (5): 1854-1857. [DOI]
  21. Woodward, Robert B. 1942. "Structure and the Absorption Spectra of Alpha,Beta-Unsaturated Ketones." Journal of the American Chemical Society 64 (1): 72-75. [DOI]
  22. Beer, August. 1852. "Bestimmung der Absorption des rothen Lichts in farbigen Flüssigkeiten." Annalen der Physik und Chemie 86: 78-88. https://doi.org/10.1002/andp.18521620505.
  23. Lambert, Johann Heinrich. 1760. Photometria. Augsburg: Sumptibus Vidae.
🔍 Confirmation by independent sources SINGLE λmax = 245 nm (1 sources, ±5 nm)
  • 🗃️ database Kim, Sunghwan, et al. 2023. "PubChem 2023 update." Nucleic Acids Research 51 (D1): D1373-D1380. https://doi.org/10.1093/nar/gkac956. UV spectrum data for CAS 50-81-7 sourced from Hazardous Substances Data Bank (HSDB). PubChem CID: 54670067. Accessed 2026. λ=245 nm
  • 🔬 peer-reviewed Anonymous. 2024. "Estimation of Vitamin C (ascorbic acid) Concentration in selected fruit samples by volumetric and UV-Spectrophotometry methods." Ilorin Journal of Science 11 (3). https://doi.org/10.54908/iljs.fapscon.2024.11.03.1009. [DOI]
  • 🔬 peer-reviewed Erwa, Ibrahim, Shinger, Mahgoub, Ishag, Omer. 2018. "Background Correction Method for Determination of Ascorbic Acid in Baobab Fruit Pulp Using Direct UV Spectrophotometry." Chemical Science International Journal 23 (2): 1-6. https://doi.org/10.9734/csji/2018/41080. [DOI]
  • 🔬 peer-reviewed Jain, Archana, Chaurasia, Anupama, Verma, Krishna K.. 1995. "Determination of ascorbic acid in soft drinks, preserved fruit juices and pharmaceuticals by flow injection spectrophotometry: Matrix absorbance correction by treatment with sodium hydroxide." Talanta 42 (6): 779-787. https://doi.org/10.1016/0039-9140(95)01477-s. [DOI]

REST: /wp-json/molgod/v1/spectra/uv-vis/50-81-7?solvent=water&path_length_cm=1

📜 Patents (public metadata) no data

No public patent metadata was found for this substance in Crossref / OpenAlex at this time. Data will be updated automatically after the next cache refresh (24h).

📚 References (Chicago Author-Date) — click to expand
  1. Kazandjieva J, Bogdanov G, Bogdanov I et al.. (2026). "Vitamins and skin aging.". Clinics in dermatology. https://doi.org/10.1016/j.clindermatol.2026.04.010
  2. Rozemeijer S, Dubois EA, de Grooth HJ et al.. (2026). "Early high-dose vitamin C for out-of-hospital cardiac arrest: the VITaCCA randomized clinical trial.". Intensive care medicine. https://doi.org/10.1007/s00134-026-08492-5
  3. Kondo Y, Sato A, Osakabe N et al.. (2026). "Vitamin C is essential for proper myogenic differentiation.". Archives of biochemistry and biophysics. https://doi.org/10.1016/j.abb.2025.110704
  4. Liu L, Zheng Z, You W et al.. (2026). "Vitamin C inhibits ACSL4 to alleviate ferro-aging in primates.". Cell metabolism. https://doi.org/10.1016/j.cmet.2026.02.010
  5. Ye Y, Zhang H, Xin Z et al.. (2026). "Vitamin C attenuates primate bone marrow aging at the molecular and progenitor level.". Cell stem cell. https://doi.org/10.1016/j.stem.2026.06.006
  6. Chen G, Jun JH, Wijshake T et al.. (2025). "Loss of vitamin C biosynthesis protects from the pathology of a parasitic infection.". Proceedings of the National Academy of Sciences of the United States of America. https://doi.org/10.1073/pnas.2517730122
  7. Xu C, Ying W, He Y et al.. (2025). "Vitamin C enhances cisplatin sensitivity in bladder cancer via 5hmC-mediated epigenetic modulation of ATF4.". Clinical epigenetics. https://doi.org/10.1186/s13148-025-02011-x
  8. World Intellectual Property Organization. 2024. "Patent Cooperation Treaty (PCT)." https://www.wipo.int/pct/.
  9. U.S. Patent and Trademark Office. 2024. "USPTO Patent Public Search." https://ppubs.uspto.gov/.
  10. European Patent Office. 2024. "Espacenet Patent Search." https://worldwide.espacenet.com/.
  11. Newman, David J., and Gordon M. Cragg. 2020. "Natural Products as Sources of New Drugs over the Nearly Four Decades from 01/1981 to 09/2019." Journal of Natural Products 83 (3): 770-803.
  12. Davies, Mark, Michał Nowotka, George Papadatos, et al. 2015. "ChEMBL Web Services: Streamlining Access to Drug Discovery Data and Utilities." Nucleic Acids Research 43 (W1): W612-W620.
  13. Bickerton, G. Richard, Gaia V. Paolini, Jérémy Besnard, Sorel Muresan, and Andrew L. Hopkins. 2012. "Quantifying the Chemical Beauty of Drugs." Nature Chemistry 4 (2): 90-98.
  14. Meanwell, Nicholas A. 2011. "Synopsis of Some Recent Tactical Application of Bioisosteres in Drug Design." Journal of Medicinal Chemistry 54 (8): 2529-2591.
  15. Ertl, Peter, and Ansgar Schuffenhauer. 2009. "Estimation of Synthetic Accessibility Score of Drug-Like Molecules Based on Molecular Complexity and Fragment Contributions." Journal of Cheminformatics 1: 8.
  16. Hopkins, Andrew L., and Colin R. Groom. 2002. "The Druggable Genome." Nature Reviews Drug Discovery 1 (9): 727-730.
  17. Allison, John R., and Mark A. Lemley. 1998. "Empirical Evidence on the Validity of Litigated Patents." AIPLA Quarterly Journal 26 (3): 185-275.
  18. Patani, George A., and Edmond J. LaVoie. 1996. "Bioisosterism: A Rational Approach in Drug Design." Chemical Reviews 96 (8): 3147-3176.
  19. Lerner, Josh. 1994. "The Importance of Patent Scope: An Empirical Analysis." RAND Journal of Economics 25 (2): 319-333.

REST: /wp-json/molgod/v1/patents/50-81-7?status=active&limit=10

🔄 Analiza chiralna / enancjomery chiralna

Stereochemia, skręcalność właściwa i rekomendowana kolumna chiralna HPLC dla CAS 50-81-7 (CIP per Cahn-Ingold-Prelog 1966).

Predictive data — CIP configuration derived from the SMILES structure. Specific rotation and column selection are estimated values. Verify against ChemSpider/PubChem and a CD spectrum before analytical use.

Centra stereogeniczne
2
Konfiguracja
(S) — konfiguracja absolutna (CIP)
Skręcalność właściwa [α]D20
23.00°
(+) prawoskrętne • rozp.: H2O • c=1, 23°C
Rekomendowana kolumna HPLC
Chiralpak IC
Faza ruchoma (eluent)
MeCN / H2O / TFA 70:30:0.1
Bibliography (Chicago author-date)
  • Eliel, Ernest L., Samuel H. Wilen, and Lewis N. Mander. 1994. "Stereochemistry of Organic Compounds." New York: Wiley.
  • Cahn, Robert S., Christopher Ingold, and Vladimir Prelog. 1966. "Specification of Molecular Chirality." Angewandte Chemie International Edition 5 (4): 385-415. https://doi.org/10.1002/anie.196603851.
  • Subramanian, Ganapathy, ed. 2007. "Chiral Separation Techniques: A Practical Approach." 3rd ed. Weinheim: Wiley-VCH.
  • Francotte, Eric, and Wolfgang Lindner, eds. 2006. "Chirality in Drug Research." Weinheim: Wiley-VCH.
  • U.S. FDA. 1992. "FDA's Policy Statement for the Development of New Stereoisomeric Drugs." Chirality 4 (5): 338-340. https://doi.org/10.1002/chir.530040513.
  • Patani, George A., and Edmond J. LaVoie. 1996. "Bioisosterism: A Rational Approach in Drug Design." Chemical Reviews 96 (8): 3147-3176.
  • Meanwell, Nicholas A. 2011. "Synopsis of Some Recent Tactical Application of Bioisosteres in Drug Design." Journal of Medicinal Chemistry 54 (8): 2529-2591.
  • Davies, Mark, Michał Nowotka, George Papadatos, et al. 2015. "ChEMBL Web Services: Streamlining Access to Drug Discovery Data and Utilities." Nucleic Acids Research 43 (W1): W612-W620.
  • Easson, Leslie H., and Edgar Stedman. 1933. "Studies on the relationship between chemical constitution and physiological action: molecular dissymmetry and physiological activity." Biochemical Journal 27 (4): 1257-1266. https://doi.org/10.1042/bj0271257.
  • Pirkle, William H., and Thomas C. Pochapsky. 1989. "Considerations of chiral recognition relevant to the liquid chromatography separation of enantiomers." Chemical Reviews 89 (2): 347-362. https://doi.org/10.1021/cr00092a006.
  • Dale, James A., and Harry S. Mosher. 1973. "Nuclear magnetic resonance enantiomer reagents: configurational correlations via nuclear magnetic resonance chemical shifts of diastereomeric mandelate, O-methylmandelate, and α-methoxy-α-trifluoromethylphenylacetate (MTPA) esters." Journal of the American Chemical Society 95 (2): 512-519. https://doi.org/10.1021/ja00783a034.
  • Beesley, Thomas E., and Raymond P. W. Scott. 1998. Chiral Chromatography. Chichester: John Wiley & Sons.
  • Allenmark, Stig G. 1991. Chromatographic Enantioseparation: Methods and Applications. 2nd ed. New York: Ellis Horwood.
  • Wainer, Irving W., ed. 1993. Drug Stereochemistry: Analytical Methods and Pharmacology. 2nd ed. New York: Marcel Dekker.
  • Aboul-Enein, Hassan Y., and Irving W. Wainer, eds. 1997. The Impact of Stereochemistry on Drug Development and Use. New York: John Wiley & Sons.
  • Ahuja, Satinder, ed. 2000. Chiral Separations by Liquid Chromatography. ACS Symposium Series 471. Washington, DC: American Chemical Society.
  • Maier, Norbert M., Pilar Franco, and Wolfgang Lindner. 2001. "Separation of enantiomers: needs, challenges, perspectives." Journal of Chromatography A 906 (1-2): 3-33. https://doi.org/10.1016/S0021-9673(00)00532-X.
  • Schurig, Volker. 2001. "Separation of enantiomers by gas chromatography." Journal of Chromatography A 906 (1-2): 275-299. https://doi.org/10.1016/S0021-9673(00)00505-7.
  • Berthod, Alain. 2009. "Chiral recognition mechanisms with macrocyclic glycopeptide selectors." Chirality 21 (1): 167-175. https://doi.org/10.1002/chir.20600.
  • Okamoto, Yoshio, and Eiji Yashima. 1998. "Polysaccharide derivatives for chromatographic separation of enantiomers." Angewandte Chemie International Edition 37 (8): 1020-1043. https://doi.org/10.1002/(SICI)1521-3773(19980504)37:8<1020::AID-ANIE1020>3.0.CO;2-5.
  • Lämmerhofer, Michael. 2010. "Chiral recognition by enantioselective liquid chromatography: mechanisms and modern chiral stationary phases." Journal of Chromatography A 1217 (6): 814-856. https://doi.org/10.1016/j.chroma.2009.10.022.
  • Caner, Hava, Eli Groner, Liron Levy, and Israel Agranat. 2004. "Trends in the development of chiral drugs." Drug Discovery Today 9 (3): 105-110. https://doi.org/10.1016/S1359-6446(03)02904-0.
  • Agranat, Israel, Hava Caner, and John Caldwell. 2002. "Putting chirality to work: the strategy of chiral switches." Nature Reviews Drug Discovery 1 (10): 753-768. https://doi.org/10.1038/nrd915.
  • Crosby, John. 1991. "Synthesis of optically active compounds: a large-scale perspective." Tetrahedron 47 (27): 4789-4846. https://doi.org/10.1016/S0040-4020(01)80950-9.
  • Nguyen, Lien Ai, Hua He, and Chuong Pham-Huy. 2006. "Chiral drugs: an overview." International Journal of Biomedical Science 2 (2): 85-100.
  • Eriksson, Tommy, Sven Björkman, and Peter Höglund. 2001. "Clinical pharmacology of thalidomide." European Journal of Clinical Pharmacology 57 (5): 365-376. https://doi.org/10.1007/s002280100320.
  • Evans, Andrew M. 2007. "Comparative pharmacology of S(+)-ibuprofen and (RS)-ibuprofen." Clinical Rheumatology 20 (Suppl 1): S9-S14. https://doi.org/10.1007/BF03342661.
  • IUPAC. 1996. "Basic terminology of stereochemistry (IUPAC recommendations 1996)." Pure and Applied Chemistry 68 (12): 2193-2222. https://doi.org/10.1351/pac199668122193.
  • Mislow, Kurt, and Jay Siegel. 1984. "Stereoisomerism and local chirality." Journal of the American Chemical Society 106 (11): 3319-3328. https://doi.org/10.1021/ja00323a043.
  • Francotte, Eric R. 2001. "Enantioselective chromatography as a powerful alternative for the preparation of drug enantiomers." Journal of Chromatography A 906 (1-2): 379-397. https://doi.org/10.1016/S0021-9673(00)00951-1.
  • Welch, Christopher J. 1994. "Evolution of chiral stationary phase design in the Pirkle laboratories." Journal of Chromatography A 666 (1-2): 3-26. https://doi.org/10.1016/0021-9673(94)80367-6.
  • Armstrong, Daniel W., Yibing Tang, Shengsheng Chen, et al. 1994. "Macrocyclic antibiotics as a new class of chiral selectors for liquid chromatography." Analytical Chemistry 66 (9): 1473-1484. https://doi.org/10.1021/ac00081a019.
  • Pirkle, William H., Donn W. House, and Jerald M. Finn. 1980. "Broad spectrum resolution of optical isomers using chiral high-performance liquid chromatographic bonded phases." Journal of Chromatography A 192 (1): 143-158. https://doi.org/10.1016/S0021-9673(00)81849-X.
  • European Directorate for the Quality of Medicines & HealthCare. 2024. European Pharmacopoeia 11.5: Chapter 2.2.7 Optical rotation. Strasbourg: EDQM Council of Europe.
  • United States Pharmacopeial Convention. 2024. USP-NF General Chapter <781> Optical Rotation. Rockville, MD: USP.
  • Gal, Joseph. 2017. "Pasteur and the art of chirality." Nature Chemistry 9 (7): 604-605. https://doi.org/10.1038/nchem.2790.
  • Pasteur, Louis. 1848. "Mémoire sur la relation qui peut exister entre la forme cristalline et la composition chimique, et sur la cause de la polarisation rotatoire." Comptes rendus de l'Académie des sciences 26: 535-538.
  • Le Bel, Joseph A. 1874. "Sur les relations qui existent entre les formules atomiques des corps organiques et le pouvoir rotatoire de leurs dissolutions." Bulletin de la Société Chimique de France 22: 337-347.
  • van 't Hoff, Jacobus Henricus. 1874. "Voorstel tot uitbreiding der tegenwoordige in de scheikunde gebruikte structuur-formules in de ruimte, benevens een daarmede samenhangende opmerking omtrent het verband tusschen optisch actief vermogen en chemische constitutie van organische verbindingen." Utrecht: J. Greven.
Extended bibliography — 7 sources (PubMed/CrossRef/EuropePMC)
  • PUBKazandjieva J, Bogdanov G, Bogdanov I et al.. (2026). "Vitamins and skin aging.". Clinics in dermatology. https://doi.org/10.1016/j.clindermatol.2026.04.010
  • PUBRozemeijer S, Dubois EA, de Grooth HJ et al.. (2026). "Early high-dose vitamin C for out-of-hospital cardiac arrest: the VITaCCA randomized clinical trial.". Intensive care medicine. https://doi.org/10.1007/s00134-026-08492-5
  • PUBKondo Y, Sato A, Osakabe N et al.. (2026). "Vitamin C is essential for proper myogenic differentiation.". Archives of biochemistry and biophysics. https://doi.org/10.1016/j.abb.2025.110704
  • PUBLiu L, Zheng Z, You W et al.. (2026). "Vitamin C inhibits ACSL4 to alleviate ferro-aging in primates.". Cell metabolism. https://doi.org/10.1016/j.cmet.2026.02.010
  • PUBYe Y, Zhang H, Xin Z et al.. (2026). "Vitamin C attenuates primate bone marrow aging at the molecular and progenitor level.". Cell stem cell. https://doi.org/10.1016/j.stem.2026.06.006
  • PUBChen G, Jun JH, Wijshake T et al.. (2025). "Loss of vitamin C biosynthesis protects from the pathology of a parasitic infection.". Proceedings of the National Academy of Sciences of the United States of America. https://doi.org/10.1073/pnas.2517730122
  • PUBXu C, Ying W, He Y et al.. (2025). "Vitamin C enhances cisplatin sensitivity in bladder cancer via 5hmC-mediated epigenetic modulation of ATF4.". Clinical epigenetics. https://doi.org/10.1186/s13148-025-02011-x
Data from PubChemSource: PubChem (NIH)
📤 Embed this molecule on your site

Have a blog, forum or scientific service? Embed the interactive 3D molecule on your website — every reader will see it, a poniżej ma link do pełnego rekordu molekuły na MolGod.org.

🔗 HTML iframe code (easiest — works everywhere)

Copy and paste into your site's HTML editor:

Adjust width and height to your layout.

⚙ WordPress Shortcode (for other shops with MOL-GOD)

🌐 Direct link (for emails, chats, LinkedIn, Twitter)

LinkedIn Twitter/X Facebook
QR code CAS 50-81-7

📱 QR code (for printing on flyers / labels / catalogs)

Place it in a product catalog, on a bottle label or a flyer. The customer scans it — sees the 3D molecule on their phone, with a link to your shop.

⬇ Download PNG

🖼 Open Graph image (for social media meta tags)

When you share the link, Facebook/LinkedIn/Discord will automatically fetch the image preview:

Preview
📋 License: The embed keeps a backlink to MolGod (required — the shop is the data source). Chemical data comes from PubChem (CC0 — public domain). The embed is FREE for educational, commercial and hobby use.
📚 REFERENCES (Aggregate bibliography, Chicago Author-Date) 78 items

All scientific sources cited in the accordions above for CAS 50-81-7. Format: Chicago Manual of Style 17th ed., Author-Date system.

🗄️ Scientific databases

  1. NIST. n.d. NIST Chemistry WebBook: CAS 50-81-7. Gaithersburg, MD: National Institute of Standards and Technology. https://webbook.nist.gov/cgi/cbook.cgi?ID=50-81-7.
  2. AIST. n.d. Spectral Database for Organic Compounds (SDBS): CAS 50-81-7. Tsukuba, Japan: National Institute of Advanced Industrial Science and Technology. https://sdbs.db.aist.go.jp/.
  3. Linstrom, Peter J., and William G. Mallard, eds. n.d. NIST Chemistry WebBook: NIST Standard Reference Database Number 69. Gaithersburg, MD: National Institute of Standards and Technology. https://doi.org/10.18434/T4D303.
  4. PubChem. n.d. PubChem Compound Summary: CAS 50-81-7. Bethesda, MD: National Center for Biotechnology Information (NCBI), National Library of Medicine. https://pubchem.ncbi.nlm.nih.gov/#query=50-81-7.

📐 Standards / Guidelines

  1. ICH. 2003. "Stability Testing of New Drug Substances and Products: Q1A(R2)." Geneva: International Council for Harmonisation of Technical Requirements for Pharmaceuticals for Human Use. https://database.ich.org/sites/default/files/Q1A%28R2%29%20Guideline.pdf.
  2. National Fire Protection Association (NFPA). 2024. "NFPA 30: Flammable and Combustible Liquids Code." NFPA, Quincy, MA. https://www.nfpa.org/codes-and-standards/all-codes-and-standards/list-of-codes-and-standards/detail?code=30.
  3. Occupational Safety and Health Administration (OSHA). 2023. "29 CFR 1910.106 — Flammable Liquids." U.S. Department of Labor, Federal Register. https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.106.
  4. European Chemicals Agency (ECHA). 2024. "Annex VI to Regulation (EC) No 1272/2008 (CLP) — Harmonised Classification and Labelling." ECHA, Helsinki / Official Journal of the European Union. https://echa.europa.eu/regulations/clp/clp-classification.
  5. European Committee for Standardization (CEN). 2016. "EN 374-1:2016 — Protective gloves against dangerous chemicals and micro-organisms — Part 1: Terminology and performance requirements for chemical risks." CEN, Brussels. https://standards.cencenelec.eu/dyn/www/f?p=205:110:::::FSP_PROJECT,FSP_ORG_ID:38536,6080&cs=1B0DAA8B85DF42E4A2C70E5D71F0BFA32.
  6. European Committee for Standardization (CEN). 2001. "EN 166:2001 — Personal eye-protection — Specifications." CEN, Brussels. https://standards.cencenelec.eu/dyn/www/f?p=CEN:110:0::::FSP_PROJECT:6541&cs=1F1A4E0A78C4DB6A28DBE2E8C29D89DCF.
  7. European Committee for Standardization (CEN). 2009. "EN 14605:2005+A1:2009 — Protective clothing against liquid chemicals — Performance requirements for clothing with liquid-tight (Type 3) or spray-tight (Type 4) connections." CEN, Brussels. https://standards.cencenelec.eu/dyn/www/f?p=CEN:110:0::::FSP_PROJECT:21581&cs=1A04A2D3C7CC58E9E6CB58D55F7EBFB7E.
  8. National Institute for Occupational Safety and Health (NIOSH). 2017. "Recommendations for Chemical Protective Clothing: A Companion to the NIOSH Pocket Guide." U.S. Department of Health & Human Services / CDC. https://www.cdc.gov/niosh/ncpc/default.html.
  9. Occupational Safety and Health Administration (OSHA). 2011. "Personal Protective Equipment — General requirements." U.S. Department of Labor — 29 CFR 1910.132. https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.132.

📖 Books

  1. Rumble, John R., ed. 2024. CRC Handbook of Chemistry and Physics: 105th Edition. Boca Raton, FL: CRC Press. https://hbcp.chemnetbase.com/.
  2. Hansen, Charles M. 2007. Hansen Solubility Parameters: A User's Handbook, 2nd ed.. Boca Raton, FL: CRC Press. https://www.routledge.com/Hansen-Solubility-Parameters-A-Users-Handbook/Hansen/p/book/9780849372483.
  3. Barton, Allan F. M. 1991. CRC Handbook of Solubility Parameters and Other Cohesion Parameters: 2nd ed.. Boca Raton, FL: CRC Press. https://www.routledge.com/CRC-Handbook-of-Solubility-Parameters-and-Other-Cohesion-Parameters/Barton/p/book/9780849301766.
  4. Connors, Kenneth A., Gordon L. Amidon, and Valentino J. Stella. 1986. Chemical Stability of Pharmaceuticals: A Handbook for Pharmacists, 2nd ed.. New York: Wiley. https://openlibrary.org/isbn/9780471879558.
  5. Rumble, John R., ed. 2019. CRC Handbook of Chemistry and Physics: 100th Edition. Boca Raton, FL: CRC Press. https://hbcp.chemnetbase.com/.
  6. Urben, Peter G. 2017. Bretherick's Handbook of Reactive Chemical Hazards, 8th Edition. Academic Press / Elsevier, Oxford. https://www.sciencedirect.com/book/9780081010594.

📄 Scientific articles (peer-reviewed)

  1. Stefanis, Emmanuel, and Costas Panayiotou. 2008. "Prediction of Hansen Solubility Parameters with a New Group-Contribution Method." International Journal of Thermophysics 29: 568-585. https://doi.org/10.1007/s10765-008-0415-z.
  2. Stoll, Vincent S., and John S. Blanchard. 1990. "Buffers: Principles and Practice: In Methods in Enzymology, vol. 182." San Diego: Academic Press. https://doi.org/10.1016/0076-6879(90)82008-P.

🌐 Websites

  1. ECHA. 2023. "Guidance on the Application of the CLP Criteria." European Chemicals Agency. https://echa.europa.eu/guidance-documents/guidance-on-clp.
  2. European Parliament. 2006. "Regulation (EC) No 1907/2006 (REACH)." Official Journal of the European Union L 396: 1–849.
  3. ECHA. 2023. "Candidate List of Substances of Very High Concern for Authorisation." European Chemicals Agency. https://echa.europa.eu/candidate-list-table.
  4. European Parliament. 2008. "Regulation (EC) No 1272/2008 on Classification, Labelling and Packaging of Substances and Mixtures (CLP)." Official Journal of the European Union L 353: 1–1355.
  5. ECHA. 2017. "Guidance on the Compilation of Safety Data Sheets." Version 3.1. European Chemicals Agency. ECHA-17-G-01-EN. https://echa.europa.eu/documents/10162/23047722/sds_en.pdf.
  6. ECHA. 2022. "Restrictions Under REACH — Annex XVII." European Chemicals Agency. https://echa.europa.eu/substances-restricted-under-reach.
  7. United Nations. 2021. Globally Harmonized System of Classification and Labelling of Chemicals (GHS). 9th revised ed. ST/SG/AC.10/30/Rev.9. New York and Geneva: United Nations. https://unece.org/ghs-rev9-2021.
  8. ECHA. 2020. "Understanding REACH." European Chemicals Agency. https://echa.europa.eu/regulations/reach/understanding-reach.
  9. United States Pharmacopeial Convention. 2024. "USP <621> Chromatography." In United States Pharmacopeia and National Formulary, USP 47-NF 42. Rockville, MD: USP. https://www.uspnf.com/.
  10. European Pharmacopoeia Commission. 2024. "2.2.46 Chromatographic Separation Techniques." In European Pharmacopoeia, 11th ed. Strasbourg: Council of Europe — EDQM. https://www.edqm.eu/en/european-pharmacopoeia-ph-eur-11th-edition.
  11. International Council for Harmonisation (ICH). 2022. "ICH Q2(R2): Validation of Analytical Procedures." International Council for Harmonisation. https://database.ich.org/sites/default/files/ICH_Q2%28R2%29_Guideline_2022_1130.pdf.
  12. International Council for Harmonisation (ICH). 1996. "ICH Q3A: Impurities in New Drug Substances." International Council for Harmonisation. https://database.ich.org/sites/default/files/Q3A%28R2%29%20Guideline.pdf.
  13. International Organization for Standardization. 2017. "ISO/IEC 17025:2017 General Requirements for the Competence of Testing and Calibration Laboratories." Geneva: ISO. https://www.iso.org/standard/66912.html.
  14. Kolthoff, Izaak Maurits, and Philip J. Elving, eds. 1978. Treatise on Analytical Chemistry, Part I: Theory and Practice. 2nd ed. New York: Wiley-Interscience.
  15. Skoog, Douglas A., F. James Holler, and Stanley R. Crouch. 2018. Principles of Instrumental Analysis. 7th ed. Boston: Cengage Learning.
  16. Christian, Gary D., Purnendu K. Dasgupta, and Kevin A. Schug. 2014. Analytical Chemistry. 7th ed. Hoboken, NJ: Wiley.
  17. EURACHEM/CITAC. 2012. "Quantifying Uncertainty in Analytical Measurement." 3rd ed. EURACHEM/CITAC Guide CG 4. https://www.eurachem.org/images/stories/Guides/pdf/QUAM2012_P1.pdf.
  18. International Organization for Standardization. 1994. "ISO 5725-2:1994 Accuracy (Trueness and Precision) of Measurement Methods and Results — Part 2: Basic Method for the Determination of Repeatability and Reproducibility of a Standard Measurement Method." Geneva: ISO. https://www.iso.org/standard/11834.html.
  19. Heckert, N. A., and J. J. Filliben. 2003. "NIST/SEMATECH e-Handbook of Statistical Methods." NIST Handbook 151. Gaithersburg, MD: National Institute of Standards and Technology. https://www.itl.nist.gov/div898/handbook/.
  20. Grubbs, Frank E. 1950. "Sample Criteria for Testing Outlying Observations." Annals of Mathematical Statistics 21 (1): 27–58.
  21. Dixon, Wilfrid J. 1950. "Analysis of Extreme Values." Annals of Mathematical Statistics 21 (4): 488–506.
  22. Snedecor, George W., and William G. Cochran. 1989. Statistical Methods. 8th ed. Ames, IA: Iowa State University Press.
  23. Student [William Sealy Gosset]. 1908. "The Probable Error of a Mean." Biometrika 6 (1): 1–25.
  24. International Organization for Standardization. 2005. "ISO 3534-1:2006 Statistics — Vocabulary and Symbols — Part 1: General Statistical Terms and Terms Used in Probability." Geneva: ISO. https://www.iso.org/standard/40145.html.
  25. Thompson, Michael, Stephen L. R. Ellison, and Roger Wood. 2002. "Harmonized Guidelines for Single-Laboratory Validation of Methods of Analysis." Pure and Applied Chemistry 74 (5): 835–855.
  26. United Nations Economic Commission for Europe. 2024. European Agreement Concerning the International Carriage of Dangerous Goods by Road (ADR), Applicable as from 1 January 2025 (ECE/TRANS/352). Geneva: UNECE. https://unece.org/transport/dangerous-goods/adr-2025-edition.
  27. International Air Transport Association. 2026. Dangerous Goods Regulations (DGR). 67th ed. Montreal: IATA. https://www.iata.org/en/programs/cargo/dgr/.
  28. International Maritime Organization. 2024. International Maritime Dangerous Goods (IMDG) Code, 2024 Edition (Amendment 42-24). London: IMO. https://www.imo.org/en/OurWork/Safety/Pages/DangerousGoods-default.aspx.
  29. United Nations. 2025. Recommendations on the Transport of Dangerous Goods: Model Regulations (Orange Book). 24th revised ed. ST/SG/AC.10/1/Rev.24. New York and Geneva: United Nations. https://unece.org/transport/dangerous-goods/un-model-regulations.
  30. International Civil Aviation Organization. 2025. Technical Instructions for the Safe Transport of Dangerous Goods by Air (Doc 9284). 2025–2026 ed. Montreal: ICAO. https://www.icao.int/safety/DangerousGoods/Pages/technical-instructions.aspx.
  31. European Commission. 2014. "Commission Decision 2014/955/EU on the list of waste pursuant to Directive 2008/98/EC." Official Journal of the European Union. https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32014D0955.
  32. Ministerstwo Klimatu i Środowiska Rzeczypospolitej Polskiej. 2020. "Rozporządzenie Ministra Klimatu z dnia 2 stycznia 2020 r. w sprawie katalogu odpadów." Dziennik Ustaw RP 2020 poz. 10. https://isap.sejm.gov.pl/isap.nsf/DocDetails.xsp?id=WDU20200000010. National rules — Poland
  33. Główny Inspektorat Ochrony Środowiska (GIOŚ). 2024. "Baza Danych O Odpadach (BDO) — System rejestracji firm utylizacyjnych." Ministerstwo Klimatu i Środowiska. https://bdo.mos.gov.pl/. National rules — Poland
  34. Polska — Sejm RP. 2012. "Ustawa z dnia 14 grudnia 2012 r. o odpadach." Dz.U. 2013 poz. 21 (z późn. zm.). https://isap.sejm.gov.pl/isap.nsf/DocDetails.xsp?id=WDU20130000021. National rules — Poland
  35. Furr, A. Keith, ed.. 2000. "CRC Handbook of Laboratory Safety." CRC Press.
  36. Pohanish, Richard P.. 2017. "Sittig's Handbook of Toxic and Hazardous Chemicals and Carcinogens." Elsevier.
  37. Lewis, Richard J.. 2012. "Sax's Dangerous Properties of Industrial Materials." Wiley.
  38. NIOSH. 2024. "Pocket Guide to Chemical Hazards." U.S. Department of Health and Human Services. https://www.cdc.gov/niosh/npg/.
  39. OSHA. 2024. "Occupational Chemical Database — Hazardous Waste Operations (HAZWOPER)." Occupational Safety and Health Administration. https://www.osha.gov/chemicaldata.
  40. European Parliament and Council. 2008. "Directive 2008/98/EC on waste (Waste Framework Directive)." Official Journal of the European Union L 312/3. https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32008L0098.
  41. European Parliament and Council. 2009. "Regulation (EC) No 1272/2008 (CLP) on classification, labelling and packaging of substances and mixtures." Official Journal of the European Union L 353. https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32008R1272.
  42. United Nations Economic Commission for Europe (UNECE). 2023. "European Agreement concerning the International Carriage of Dangerous Goods by Road (ADR 2025)." UNECE. https://unece.org/transport/standards/transport/dangerous-goods/adr-2025.
  43. IPCS INCHEM. 2024. "International Programme on Chemical Safety — Waste Management Guidelines." WHO/UNEP/ILO. https://www.inchem.org/.
  44. European Parliament and Council. 2006. "Regulation (EC) No 1013/2006 on Shipments of Waste." Official Journal of the European Union L 190: 1–98. https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32006R1013.
  45. International Council for Harmonisation (ICH). 2000. "Q7 Good Manufacturing Practice Guide for Active Pharmaceutical Ingredients." ICH Expert Working Group. https://database.ich.org/sites/default/files/Q7%20Guideline.pdf.
  46. International Organization for Standardization. 2017. "ISO/IEC 17025:2017 General requirements for the competence of testing and calibration laboratories." ISO. https://www.iso.org/standard/66912.html.
  47. World Health Organization. 2010. "WHO Good Manufacturing Practices for Pharmaceutical Products: Main Principles (WHO Technical Report Series No. 957, Annex 3)." WHO Press. https://www.who.int/publications/m/item/trs957-annex3.
  48. International Council for Harmonisation (ICH). 2003. "ICH Q1A(R2): Stability Testing of New Drug Substances and Products." International Council for Harmonisation. https://database.ich.org/sites/default/files/Q1A%28R2%29%20Guideline.pdf.
  49. International Council for Harmonisation (ICH). 2006. "ICH Q3A(R2): Impurities in New Drug Substances." ICH. https://database.ich.org/sites/default/files/Q3A%28R2%29%20Guideline.pdf.
  50. International Council for Harmonisation (ICH). 1999. "ICH Q6A: Specifications for New Drug Substances and Products." ICH. https://database.ich.org/sites/default/files/Q6A%20Guideline.pdf.
  51. International Council for Harmonisation (ICH). 2008. "ICH Q10: Pharmaceutical Quality System." ICH. https://database.ich.org/sites/default/files/Q10%20Guideline.pdf.
  52. U.S. Food and Drug Administration. 2024. "21 CFR Part 211: Current Good Manufacturing Practice for Finished Pharmaceuticals." US Code of Federal Regulations. https://www.ecfr.gov/current/title-21/chapter-I/subchapter-C/part-211.
  53. European Medicines Agency. 2014. "Guideline on Process Validation for Finished Products — Information and Data to Be Provided EMA/CHMP/CVMP/QWP/BWP/70278/2012." European Medicines Agency. https://www.ema.europa.eu/en/documents/scientific-guideline/guideline-process-validation-finished-products-information-data-be-provided-regulatory-submissions-revision-1_en.pdf.
  54. United States Pharmacopeial Convention. 2024. "United States Pharmacopeia and National Formulary, USP 47-NF 42." USP. https://www.uspnf.com/.
  55. European Pharmacopoeia Commission. 2024. "European Pharmacopoeia 11th Edition." Council of Europe — EDQM. https://www.edqm.eu/en/european-pharmacopoeia-ph-eur-11th-edition.
  56. Pharmaceutical Inspection Co-operation Scheme (PIC/S). 2021. "Guide to Good Manufacturing Practice for Medicinal Products PE 009-15." PIC/S Secretariat, Geneva. https://picscheme.org/en/publications.
  57. International Pharmaceutical Excipients Council (IPEC) and Pharmaceutical Quality Group (PQG). 2017. "Joint IPEC-PQG Good Manufacturing Practices Guide for Pharmaceutical Excipients." IPEC-Americas. https://ipecamericas.org/sites/default/files/IPECPQGGMPGuide2017.pdf.
📥 Download BibTeX📥 Download RISImport into Zotero/Mendeley/EndNote/Papers.
📜 License & provenance
COMPUTED — PubChem3D · 3D conformer computed by PubChem using OMEGA; not an experimental structure.
Model
ascorbic acid · 50-81-7
InChIKey
CIWBSHSKHKDKBQ-JLAZNSOCSA-N
License
CC BY-SA 4.0 International
Attribution
MolGod Scientific — ascorbic acid (CAS 50-81-7)
License & provenance record
ascorbic acid (CAS 50-81-7) →
MolGod molecule record
ascorbic acid →
Source data
PubChem CID 54670067 ↗
Model information
STL generated by MolGod · MolGod STL Exporter build 48804cd20b0d · generated 2026-10-14
SHA-256 (STL)
5693179ef45dd363432c3c41e14989dd2490cd96ebdd9683c14e091edf390b32
MD5 (STL)
c469c372c6773ea760ed5ea19d79a130
MolGod Identification Number
MG_469-903-322-56
Transformation
MolGod Scientific ball-and-stick mesh
Changes
Converted into a triangulated molecular mesh; atomic coordinates and connectivity unchanged.
Wikimedia Commons
not published yet
Free printable molecule model
Download the model, print it and use it in education. When you publish a photo, a material or an adaptation, the CC BY-SA 4.0 International licence requires you to credit “MolGod Scientific” as the author of the model, link to the original and to the licence text, indicate any changes you made and share adaptations under the same licence. A ready-to-use attribution text is in this section. No sign-up, no fees and no obligation to leave a review.

This license applies to the MolGod-created STL mesh, not automatically to third-party source material.