CAS 20651-30-3 appears in our catalog under these names: 5–Methyl–2–(methylthio)pyrimidin–4(3H)–one, 5-Methyl-2-(methylthio)pyrimidin-4(3H)-one 97%, 5-Methyl-2-(methylthio)pyrimidin-4(3H)-one, 97%, 97%, 5-methyl-2-(methylsulfanyl)-3,4-dihydropyrimidin-4-one, 97%. Offered by: GLPBio, Ambeed, Chemat, Fluorochem. Available pack sizes: 1g, 250mg, 5g, 10g, 25g.