L-tryptophan zwitterion

Name: L-tryptophan zwitterion (CAS 73-22-3) – space-filling 3D model – rotation animation, MolGod Viewer
Uploaded: 2026-11-02T17:12:37Z
Duration: 3 s
Channel: MolGod Scientific
Description: L-tryptophan zwitterion (CAS 73-22-3) – space-filling 3D model – rotation animation, MolGod Viewer

CAS 73-22-3 · C₁₁H₁₂N₂O₂ · MW 204.22 g/mol

Full record: L-tryptophan zwitterion — Safety Data Sheet →

Model views

ball-and-stick 3D model
skeletal 3D model
space-filling 3D model – rotation animation
2D structure

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L-tryptophan zwitterion (CAS 73-22-3), C11H12N2O2 - 3D ball-and-stick molecular model, engraved element symbols (C H N O), MolGod STL preview

MG_353-174-369-37 · engraved · 347,478 △ · 17 MB · SHA-256 fe3690200fbd15f7

Download 3D model: L-tryptophan zwitterion, C₁₁H₁₂N₂O₂, CAS 73-22-3 · ENGRAVED (C, H, N, O) · 17 MB

L-tryptophan zwitterion (CAS 73-22-3), C11H12N2O2 - 3D ball-and-stick molecular model, MolGod STL preview

MG_353-174-369-37 · normal · 11,808 △ · 577 KB · SHA-256 68bb30d8f09609c9

Download 3D model: L-tryptophan zwitterion, C₁₁H₁₂N₂O₂, CAS 73-22-3 · NORMAL · 577 KB

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About L-tryptophan zwitterion

L-tryptophan zwitterion is a chemical compound registered under number CAS 73-22-3, with the molecular formula C₁₁H₁₂N₂O₂, and a molar mass of 204.22 g/mol.

The molecule contains 27 atoms connected by 28 chemical bonds. The full systematic IUPAC name of this compound is (2S)-2-amino-3-(1H-indol-3-yl)propanoic acid. The interactive 3D model above lets you view the spatial arrangement of the atoms — you can rotate it with the mouse, zoom with the scroll wheel, and switch between skeletal / Ball & Stick / Space Fill visualization modes.

In terms of physicochemical properties, the partition coefficient logP = -1.1 (negative value, a hydrophilic compound), polar surface area PSA = 79.1 Å², 3 donors and 3 hydrogen bond acceptors. These parameters are key when assessing bioavailability and interaction with biomolecules.

Chemical data for this compound comes from PubChem (NIH NLM NCBI), one of the world's largest chemical databases. All information is updated automatically and enriched with GHS hazard statement translations compliant with the CLP Regulation (EC 1272/2008). The interactive 3D model and the viewer images are protected by copyright (© MolGod.org) — terms of use: molgod.org/copyright/.

Physicochemical properties

Molecular formula	C₁₁H₁₂N₂O₂
Molar mass	204.22 g/mol
IUPAC	(2S)-2-amino-3-(1H-indol-3-yl)propanoic acid
SMILES	`C1=CC=C2C(=C1)C(=CN2)C[C@@H](C(=O)O)N`
InChIKey	`QIVBCDIJIAJPQS-VIFPVBQESA-N`
logP (XLogP3)	-1.1
PSA	79.1 Å²
HBD / HBA	3 / 3
PubChem CID	CID 6305 ↗

Scientific literature

Related literature

1 articles · 1 open access · Sources: PubMed, OpenAlex, Semantic Scholar

🔓

Heat Capacities of l-Histidine, l-Phenylalanine, l-Proline, l-Tryptophan and l-Tyrosine

Václav Pokorný, Vojtěch Štejfa, Jakub Havlín et al. (2021) · Molecules

Cytowania: 23Open AccessDOI ↗PDF ↗

Data from PubMed (NIH NLM), OpenAlex (CC0), Semantic Scholar (AI2). AI Summary generated by Semantic Scholar TLDR. Articles marked with require paid access.

Synonyms

L-tryptophan · tryptophan · 73-22-3 · L-Tryptophane · Tryptophane · (S)-Tryptophan · trofan · tryptacin · (2S)-2-amino-3-(1H-indol-3-yl)propanoic acid · Ardeytropin · Pacitron · Indole-3-alanine · L-Tryptofan · L-Trp · L-(-)-Tryptophan

Data sources

📊 PubChem CID 6305 — NIH
🔬 NIST WebBook — spectroscopy
💊 ChEMBL — bioactivity

Related molecules

4-fluoro-L-phenylalanine CAS 1132-68-9 · C9H10FNO2 Similar structure · Tanimoto 0.39 Histidine Monohydrochloride Monohydrate CAS 5934-29-2 · C₆H₁₂ClN₃O₃ Similar structure · Tanimoto 0.38 4-(Phenylmethyl) hydrogen L-aspartate CAS 2177-63-1 · C11H13NO4 Similar structure · Tanimoto 0.36 Indoxyl-beta-D-glucoside CAS 487-60-5 · C14H17NO6 Similar structure · Tanimoto 0.35 Serotonin (CAS 50-67-9) CAS 50-67-9 · C10H12N2O Similar structure · Tanimoto 0.33 (R)-3-Amino-2-phenylpropionic acid CAS 1008-63-5 · C9H11NO2 Similar structure · Tanimoto 0.32

📜 License & provenanceMolGod_License_1

COMPUTED — PubChem3D · 3D conformer computed by PubChem using OMEGA; not an experimental structure.

Model: L-tryptophan zwitterion · 73-22-3
InChIKey: QIVBCDIJIAJPQS-VIFPVBQESA-N
License: CC BY-SA 4.0 International
Attribution: MolGod Scientific — L-tryptophan zwitterion (CAS 73-22-3)
License & provenance record: L-tryptophan zwitterion (CAS 73-22-3) →
MolGod molecule record: L-tryptophan zwitterion →
Source data: PubChem CID 6305 ↗
Model information: STL generated by MolGod · MolGod STL Exporter build 48804cd20b0d · generated 2026-10-14
SHA-256 (STL): 68bb30d8f09609c98f26787b5a29de18b6ce0db07ef3c39fc7c7e1a4795b0966
MD5 (STL): a78fae91550e1460bf38aa558275b40d
MolGod Identification Number: MG_353-174-369-37
Transformation: MolGod Scientific ball-and-stick mesh
Changes: Converted into a triangulated molecular mesh; atomic coordinates and connectivity unchanged.
Wikimedia Commons: not published yet

📄 Download 3D model: L-tryptophan zwitterion, C₁₁H₁₂N₂O₂, CAS 73-22-3 · NORMAL · 577 KB 📄 Download 3D model: L-tryptophan zwitterion, C₁₁H₁₂N₂O₂, CAS 73-22-3 · ENGRAVED (C, H, N, O) · 17 MB

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