CAS 191043-81-9 appears in our catalog under these names: Methanesulfonamide, n-(4-bromophenyl)-n-(methylsulfonyl)-, 98%, N-(4-Bromophenyl)-N-(methylsulfonyl)methanesulfonamide, 98%. Offered by: Combi-blocks, AmBeed. Available pack sizes: 1g, 5g, 25g.