CAS 941239-79-8 appears in our catalog under these names: Methyl 3-(aminosulfonyl)-5-chlorothiophene-2-carboxylate, 95%, Methyl 3-(aminosulfonyl)-5-chlorothiophene-2-carboxylate, Methyl 5-chloro-3-sulfamoylthiophene-2-carboxylate, 97%. Offered by: Combi-blocks, TRC, AmBeed. Available pack sizes: 1g, 5g.