SMILES: CN1C=NC=C1C[C@@H](C(=O)[O-])[NH3+]
Description: The molecule is a L-histidine derivative that is L-histidine substituted by a methyl group at position 3 on the imidazole ring; major species at pH 7.3. It is a L-histidine derivative, a non-proteinogenic L-alpha-amino acid and a zwitterion. It is a tautomer of a N(pros)-methyl-L-histidine.