The molecule is a hydroxy monocarboxylic acid anion obtained by deprotonation of the carboxy and phosphate OH groups of 4-O-phosphono-D-threonic acid; major species at pH 7.3. It is a hydroxy monocarboxylic acid anion and an organophosphate oxoanion. It is a conjugate base of a 4-phospho-D-threonic acid.
(2S,3R)-2,3-dihydroxy-4-phosphonatooxybutanoate