CAS 514218-58-7 appears in our catalog under these names: Ethyl 5-(aminocarbonyl)-2-[(cyanoacetyl)amino]-4-methylthiophene-3-carboxylate, 95%, Ethyl 5-carbamoyl-2-(2-cyanoacetamido)-4-methylthiophene-3-carboxylate, 97%. Offered by: Combi-blocks, AmBeed. Available pack sizes: 250mg, 5g, 1g.