CAS 514219-45-5 appears in our catalog under these names: Dimethyl 5-[(cyanoacetyl)amino]-3-methylthiophene-2,4-dicarboxylate, 95%, Dimethyl 5-(2-cyanoacetamido)-3-methylthiophene-2,4-dicarboxylate, 97%. Offered by: Combi-blocks, AmBeed. Available pack sizes: 250mg, 1g, 5g.