CAS 904998-83-0 appears in our catalog under these names: Propyl 2-amino-4-(3,4-dimethylphenyl)thiophene-3-carboxylate, 95%, Propyl 2-amino-4-(3,4-dimethylphenyl)thiophene-3-carboxylate, 97%. Offered by: Combi-blocks, AmBeed. Available pack sizes: 250mg, 1g, 5g.