CAS 18678-13-2 appears in our catalog under these names: 2-Methylthieno(3,2-d)pyrimidin-4-ol, 2-Methylthieno[3,2-d]pyrimidin-4-ol, 98%, 2-Methylthieno[3,2-d]pyrimidin-4(3h)-one, 95%, 2-Methyl-3h-thieno[3,2-d]pyrimidin-4-one, 95%, 2-Methylthieno[3,2-d]pyrimidin-4(3H)-one 95%. Offered by: Biosynth, Fluorochem, Combi-blocks, Ambeed, Chemat. Available pack sizes: 5g, 1g, 10g, 100mg, 250mg.