CAS 331838-92-7 appears in our catalog under these names: Methyl 2-amino-4-(4-bromophenyl)thiophene-3-carboxylate, 95%, 2-Amino-4-(4-bromo-phenyl)-thiophene-3-carboxylic acid methyl ester, 97%. Offered by: Combi-blocks, Fluorochem. Available pack sizes: 250mg, 1g, 5g.