CAS 549478-39-9 appears in our catalog under these names: Methyl 3-[(3-chloropropanoyl)amino]thiophene-2-carboxylate, 95%, Methyl 3-(3-chloropropanamido)thiophene-2-carboxylate, 95+%. Offered by: Combi-blocks, AmBeed. Available pack sizes: 250mg, 1g, 5g.