CAS 57-96-5 appears in our catalog under these names: Sulfinpyrazone, >95% (HPLC), Sulfinpyrazone/ 98.1% (existing batch purity), Sulfinpyrazone, >95.0%(HPLC)(T), Sulfinpyrazone 98%, (±)-Sulfinpyrazone, 98%, 98%. Offered by: TRC, TargetMol, TCI, Ambeed, Chemat. Available pack sizes: 10g, 2,5g, 25g, 1g, 100mg, 200mg, 500mg, 5g.