The molecule is a dipeptide zwitterion obtained by transfer of a proton from the carboxy to the amino terminus of His-Ala. Major species at pH 7.3. It has a role as a metabolite. It is a tautomer of a His-Ala.
(2S)-2-[[(2S)-2-azaniumyl-3-(1H-imidazol-5-yl)propanoyl]amino]propanoate