SMILES: CN1C=NC=C1CC(C(=O)[O-])[NH3+]
Description: The molecule is an alpha-amino acid zwitterion obtained by transfer of a proton from the carboxy to the amino group of 3-methylhistidine; major species at pH 7.3. It has a role as a human metabolite. It is a tautomer of a 3-methylhistidine.