4-Chloro-2,6-bis(4-methyl-1-piperazinyl)-5-(methylthio)pyrimidine hydrochloride 55921-69-2 Bis-2,4-(N-methylpiperazino)-6-chloro-5-methylthio-pyrimidine hydrochloride Pyrimidine, 4-chloro-2,6-bis(4-methyl-1-piperazinyl)-5-(methylthio)-, monohydrochloride