CAS 874607-16-6 appears in our catalog under these names: Methyl 2-mercapto-3-methyl-4-oxo-3,4-dihydroquinazoline-7-carboxylate, 95%, Methyl 2-mercapto-3-methyl-4-oxo-3,4-dihydroquinazoline-7-carboxylate, 97%. Offered by: Combi-blocks, AmBeed. Available pack sizes: 5g, 1g.