CAS 350988-33-9 appears in our catalog under these names: Isopropyl 2-amino-5-(aminocarbonyl)-4-methylthiophene-3-carboxylate, 95%, Isopropyl 2-amino-5-carbamoyl-4-methylthiophene-3-carboxylate, 97%. Offered by: Combi-blocks, AmBeed. Available pack sizes: 250mg, 5g, 1g.