The molecule is an optically active form of O(4)-phosphonatotyrosine(2-) having L-configuration. It is a conjugate base of an O(4)-phospho-L-tyrosine. It is an enantiomer of an O(4)-phosphonato-D-tyrosine(2-).
(2S)-2-azaniumyl-3-(4-phosphonatooxyphenyl)propanoate