CAS 299937-81-8 appears in our catalog under these names: 2-Mercapto-6-([(4-methylphenyl)thio]methyl)pyrimidin-4(3h)-one, 95%, 2-Mercapto-6-((p-tolylthio)methyl)pyrimidin-4(3H)-one, 95+%. Offered by: Combi-blocks, AmBeed. Available pack sizes: 1g, 5g.