CAS 438225-52-6 appears in our catalog under these names: 3-Amino-2-methyl-6-propylthieno[2,3-d]pyrimidin-4(3h)-one, 95%, 3-Amino-2-methyl-6-propylthieno(2,3-d)pyrimidin-4(3H)-one, 97%. Offered by: Combi-blocks, AmBeed. Available pack sizes: 250mg, 5g, 1g.