The molecule is a carbohydrate acid anion that is a trianion arising from deprotonation of the carboxy and phospho groups of 8-phospho-3-deoxy-D-manno-oct-2-ulosonic acid; major species at pH 7.3. It is an organophosphate oxoanion, a carbohydrate acid derivative anion and a monocarboxylic acid anion. It is a conjugate base of an 8-phospho-3-deoxy-D-manno-oct-2-ulosonic acid.
(4R,5R,6R,7R)-4,5,6,7-tetrahydroxy-2-oxo-8-phosphonatooxyoctanoate