6-Methyl-4-(2-methylphenyl)-2-(1-piperazinyl)thieno(2,3-d)pyrimidine monohydrochloride 99487-30-6 Thieno(2,3-d)pyrimidine, 6-methyl-4-(2-methylphenyl)-2-(1-piperazinyl)-, monohydrochloride