CAS 127-63-9 appears in our catalog under these names: Diphenyl sulfone, Diphenyl sulfone, Diphenyl sulfone, 99+% , Diphenyl Sulfone, >99.0%(GC), Phenyl sulfone, 97%. Offered by: Dr. Ehrenstorfer, GLPBio, Thermo Scientific (Alfa Aesar), TCI, Thermo Scientific (Acros). Available pack sizes: 250mg, 500g, 1000g, 250g, 25g, 1KG, 5g, 100g.