CAS 50-81-7
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中文版本是从欧盟版本翻译而来的，仅供参考。 它不是中国市场上具有法律效力的文件，不能用于在中国境内的 申报、备案、运输或流通。
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Аскорбиновая кислота (Е300). CAS 50-81-7.
We are not issuing this sheet yet.
Our engine could not build a document for this substance that meets our own completeness threshold, so it is held for review rather than published. We would rather tell you that than sell you a sheet we do not stand behind.
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Identity, structure, physical and chemical properties, analytical data and the literature — every value with the source it came from and the date that source was read. The full record is in the data sections further down this page.
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数据转录自法规登记册和专业文献，并注明来源与版本。不能替代供应商的安全数据表。未记录来源的字段已作相应标注。
化学概述: L-Ascorbic Acid
| 分子式 | C6H8O6 |
| 分子量 | 176.12 g/mol |
| 熔点 | 190 °C[1] |
| 密度 | 1.65 g/cm³[1] |
| LogP（亲脂性） | -1.85[1] |
| pKa | 4.17[1] |
| IUPAC名称 | (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 |
同义词: l-ascorbic acid · ascorbic acid · vitamin C · 50-81-7 · L(+)-Ascorbic acid
数据来源： PubChem (NLM/NIH), CRC Handbook 105th ed. (Haynes 2024)
最后更新： 2026-09-03
📚 科学参考文献（芝加哥作者-日期格式） (1 来源)
- Rumble, J.R., ed. CRC Handbook of Chemistry and Physics. 105th ed. Boca Raton: CRC Press, 2024. ↗ applies to: 熔点 · 密度 · LogP（亲脂性） · pKa
科学研究
📚 科学参考文献（芝加哥作者-日期格式） 7 refs · 1 baz
MOLECULE 按CAS号参考文献（实时来自13+数据库）
来源： db:pubmed (8)
- 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 →
- 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 →
- 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 →
- 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 →
- 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 →
- 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 →
- 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 →
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.
Аскорбиновая кислота (Е300) — CAS 50-81-7. Listed by Uts Shanghai. Prepared from the supplier’s public catalogue; not verified against their internal data.