The molecule is the cyclic anhydride of triphosphoric acid. It is a phosphorus oxoacid, an inorganic heterocyclic compound and a cyclic phosphorus acid anhydride. It is a conjugate acid of a cyclotriphosphate(3-).
2,4,6-trihydroxy-1,3,5,2lambda5,4lambda5,6lambda5-trioxatriphosphinane 2,4,6-trioxide