The molecule is an organophosphonate oxoanion obtained by deprotonation of the carboxy and phosphonate groups as well as protonation of the amino group of (1R,2S)-1-(S-L-cysteinyl)-2-hydroxypropylphosphonate; major species at pH 7.3. It is an organophosphonate oxoanion and an alpha-amino-acid anion. It is a conjugate base of a (1R,2S)-1-(S-L-cysteinyl)-2-hydroxypropylphosphonate.
(2R)-2-azaniumyl-3-[(1R,2S)-2-hydroxy-1-phosphonatopropyl]sulfanylpropanoate