SMILES: CN1C=C(N=C1)CC(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 1-methylhistidine; major species at pH 7.3. It has a role as a human urinary metabolite. It is a tautomer of a 1-methylhistidine.