CAS 3824-74-6 appears in our catalog under these names: Schreiner's Catalyst 98%, SCHREINER'S CATALYST, N,N'-Bis[3,5-bis(trifluoromethyl)phenyl]urea, 97%, 97%, 1,3-Bis[3,5-bis(trifluoromethyl)phenyl]urea, 99.98%, Schreiner's Catalyst, 98%. Offered by: Ambeed, Sigma-Aldrich, Chemat, MedChemExpress, Fluorochem. Available pack sizes: 100mg, 250mg, 1g, 5g, 50mg, 500 mg, 100 mg, 250 mg.