The molecule is an inositol phosphate oxoanion obtained by deprotonation of the phospho groups of 1D-myo-inositol 1,3-biphosphate; major species at pH 7.3. It is a conjugate base of a myo-inositol 1,3-bisphosphate.
[(1S,2R,4S,5R)-2,3,4,6-tetrahydroxy-5-phosphonatooxycyclohexyl] phosphate