CAS 642-36-4 appears in our catalog under these names: 4,5-Diphenylimidazolin-2-one, 95%, 4,5-Diphenyl-1H-imidazol-2(5H)-one 98%, 4,5-Diphenyl-1H-imidazol-2(5H)-one, 98%, 98%, 4,5-Diphenylimidazolin-2-one, 98%. Offered by: Combi-blocks, Ambeed, Chemat, Fluorochem. Available pack sizes: 25g, 5g, 1g, 250mg, 100mg, 10g.