Molecular properties
- Formula
- C11H12N2O2
- Molar mass
- 204.22 g·mol−1
- Exact mass
- 204.0899 Da
- 7
- 3
- 3
- 79.10 Ų
- -1.1 (PubChem computed XLogP3-AA descriptor)
- CAS
- 73-22-3
- PubChem CID
- 6305
Molecule record
tryptophan
C11H12N2O2
204.22 g/mol
Interactions
- Polarity
- Often polar; exact polarity depends on size, substitution, and ionization state.
- Acid-base behavior
- Review ionizable groups and pKa data where available; ChemForge does not infer definitive acid-base state from identity alone.
- Intermolecular forces
- Assess dispersion, dipole interactions, hydrogen bonding, and ionic character from the functional groups shown.
Functional groups
Alcohol
Alkene
Amine
Aromatic ring
Carboxylic acid
Phenol
Physical properties
| Property | Value | Conditions | Source |
|---|---|---|---|
| Logp | -1.1 | PubChem computed XLogP3-AA descriptor | PubChem(link only) |
Common names and synonyms
- (-)-Tryptophan
- (2S)-2-amino-3-(1H-indol-3-yl)propanoic acid
- (S)-Tryptophan
- 1-beta-3-Indolylalanine
- 1H-Indole-3-alanine
- 1beta-3-Indolylalanine
- 3-Indol-3-ylalanine
- 73-22-3
Show all 23 synonyms
- Ardeytropin
- Indole-3-alanine
- L-(-)-Tryptophan
- L-Trp
- L-Tryptofan
- L-Tryptophane
- L-beta-3-Indolylalanine
- L-tryptophan
- Pacitron
- Tryptophan, L-
- Tryptophane
- Tryptophanum
- triptofano
- trofan
- tryptacin
Structure identifiers
- Canonical SMILES
- C1=CC=C2C(=C1)C(=CN2)C[C@@H](C(=O)O)N
- Isomeric SMILES
- C1=CC=C2C(=C1)C(=CN2)C[C@@H](C(=O)O)N
- InChI
- InChI=1S/C11H12N2O2/c12-9(11(14)15)5-7-6-13-10-4-2-1-3-8(7)10/h1-4,6,9,13H,5,12H2,(H,14,15)/t9-/m0/s1
- InChIKey
- QIVBCDIJIAJPQS-VIFPVBQESA-N
- PubChem CID
- 6305
Spectroscopy
Tabs appear only for spectra stored with clear provenance.
Simulated FTIR trace
Predicted FTIR / %T
4 cm-1 resolution / deterministic instrument profile
Hover for cursor
Peak assignments
3350 cm−1broad O-H (simulated)
3000 cm−1broad acid O-H (simulated)
1710 cm−1C=O acid (simulated)
1645 cm−1C=C alkene (simulated)
3030 cm−1aromatic C-H (simulated)
1600 cm−1aromatic C=C (simulated)
2960 cm−1sp3 C-H (simulated)
Simulated NMR
On-demand educational prediction for tryptophan; not experimental data.
Simulated EI mass spectrum
On-demand educational fragmentation for tryptophan; not experimental data.
Sources
Molecule identity
Retrieved 8/7/2026. Reuse status is summarized by the badge; open the source for full details.
simulated IR
ChemForge original educational simulation.