CAS 1314-56-3 appears in our catalog under these names: Phosphorus(V) oxide, ACS, 98% min , Phosphorus(V) oxide, 98% , Phosphorus(V) oxide, 99.99% . Offered by: Thermo Scientific (Alfa Aesar). Available pack sizes: 50g, 500g, *4x500g, 2500g, 10g, 100g.