The molecule is a 4-hydroxy monocarboxylic acid anion obtained by deprotonation of the carboxy and phosphate OH groups of 5-phospho-D-xylonic acid. Major microspecies at pH 7.3. It is a 4-hydroxy monocarboxylic acid anion and an organophosphate oxoanion. It is a conjugate base of a 5-phospho-D-xylonic acid.
(2R,3S,4R)-2,3,4-trihydroxy-5-phosphonatooxypentanoate