The molecule is an amino acid zwitterion obtained by transfer of a proton from the carboxy to the amino group of 5-amino-5-deoxy-3-dehydroshikimic acid; major species at pH 7.3. It is a tautomer of a 5-amino-5-deoxy-3-dehydroshikimic acid.
(4S,5R)-5-azaniumyl-4-hydroxy-3-oxocyclohexene-1-carboxylate