The molecule is a divalent inorganic anion obtained by removal of two protons from triphosphoric acid. It is a triphosphate ion and a divalent inorganic anion. It is a conjugate base of a triphosphate(1-). It is a conjugate acid of a triphosphate(3-).
[hydroxy-[hydroxy(oxido)phosphoryl]oxyphosphoryl] hydrogen phosphate