CAS 590356-76-6 appears in our catalog under these names: Methyl 2-([(2-aminothien-3-yl)carbonyl]amino)thiophene-3-carboxylate, 95%, Methyl 2-(2-aminothiophene-3-carboxamido)thiophene-3-carboxylate, 95+%. Offered by: Combi-blocks, AmBeed. Available pack sizes: 250mg, 1g, 5g.