CAS 71-00-1PubChem CID 6274
L-Histidine
L-histidine is the L-enantiomer of the amino acid histidine. It has a role as a micronutrient, a nutraceutical, a mouse metabolite, a Saccharomyces cerevisiae metabolite, an Escherichia coli metabolite, a human metabolite and an algal metabolite. It is a L-alpha-amino acid, a histidine and a proteinogenic amino acid. It is a conjugate base of a L-histidinium(1+). It is a conjugate acid of a L-histidinate(1-). It is an enantiomer of a D-histidine. It is a tautomer of a L-histidine zwitterion. — ChEBI
- IUPAC name
- (2S)-2-amino-3-(1H-imidazol-5-yl)propanoic acid
- Molecular formula
- C6H9N3O2
- Molecular weight
- 155.15 g/mol
- Exact mass
- 155.069476538 Da
- XLogP3
- -3.2
- Topological polar surface area
- 92.0 Ų
- Hydrogen-bond donors
- 3
- Hydrogen-bond acceptors
- 4
- Covalent units
- 1
- Defined stereocentres
- 1
Also known as
histidineglyoxaline-5-alanineL-(-)-HistidinehistidinaIstidinaHISTIDINE, L-L-Histidin(2S)-2-amino-3-(1H-imidazol-4-yl)propanoic acid
16 more reported names
(S)-4-(2-Amino-2-carboxyethyl)imidazoleFEMA No. 3694L-His(S)-alpha-amino-1H-imidazole-4-propanoic acidHistidinum4-(2-Amino-2-carboxyethyl)imidazole(S)-2-Amino-3-(4-imidazolyl)propionsaeure(S)-alpha-Amino-1H-imidazole-4-propionic acid(S)-a-Amino-1H-imidazole-4-propanoic acidalpha-Amino-4(or 5)-imidazolepropionic acid1H-Imidazole-4-propanoic acid, alpha-amino-, (S)-4QD397987ENSC-137773CHEBI:15971(2S)-2-amino-3-(imidazol-4-yl)propanoic acid(S)-2-amino-3-(1H-imidazol-4-yl)propanoic acid
External database identifiers
- ChEBI:CHEBI:15971
- ChEMBL:CHEMBL17962
- EPA DTXSID:DTXSID9023126
- PubMed:39172838
- PubMed:38971454
- PubMed:35151785
- PubMed:31254495
- PubMed:29968805
- PubMed:27845049
- PubMed:27543355
- PubMed:25238095
- PubMed:23124343
- PubMed:23122502
- PubMed:23109729
- PubMed:23105881
Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.