The molecule is an organophosphate oxoanion arising from deprotonation of the phosphate and carboxy groups of cyclic 2,3-bisphospho-D-glyceric acid; major species at pH 7.3. It is an organophosphate oxoanion and a monocarboxylic acid anion. It is a conjugate acid of a cyclic 2,3-bisphospho-D-glyceric acid.
(6R)-2,4-dioxido-2,4-dioxo-1,3,5,2lambda5,4lambda5-trioxadiphosphepane-6-carboxylate