The molecule is trianion of 4-phospho-D-erythronic acid arising from deprotonation of phosphate and carboxylic acid functions. It is a hydroxy monocarboxylic acid anion and an organophosphate oxoanion. It is a conjugate base of a 4-phospho-D-erythronic acid.
(2R,3R)-2,3-dihydroxy-4-phosphonatooxybutanoate