The molecule is an organophosphate oxoanion obtained by deprotonation of the carboxy and phosphate OH groups of (R)-3-phosphomevalonic acid; major species at pH 7.3. It is an organophosphate oxoanion and a hydroxy monocarboxylic acid anion. It is a conjugate base of a (R)-3-phosphomevalonic acid.
(3R)-5-hydroxy-3-methyl-3-phosphonatooxypentanoate