The molecule is a dipeptide zwitterion resulting from transfer of a proton from the carboxy to the amino group of S-[(Z)-N-hydroxy-2-phenylethanimidoyl]-L-cysteinylglycine; major species at pH 7.3. It is a tautomer of a S-[(Z)-N-hydroxy-2-phenylethanimidoyl]-L-cysteinylglycine.
2-[[(2R)-2-azaniumyl-3-[(Z)-C-benzyl-N-hydroxycarbonimidoyl]sulfanylpropanoyl]amino]acetate