The molecule is an doubly-charged organophosphate oxoanion arising from deprotonation of the phosphate OH groups of aldehydo-D-galactose 6-phosphate; major species at pH 7.3. It is a conjugate base of an aldehydo-D-galactose 6-phosphate.
[(2R,3S,4S,5R)-2,3,4,5-tetrahydroxy-6-oxohexyl] phosphate