2-Methylamino-4-N-methylpiperazino-5-methylthio-6-beta-ethoxyethoxy-pyrimidine hydrochloride 2-Pyrimidinamine, 4-(2-ethoxyethyl)-N-methyl-6-(4-methyl-1-piperazinyl)-5-(methylthio)-, monohydrochloride 55477-43-5