2-Methylamino-4-N-methylpiperazin-5-thiomethyl-6-chlorpyrimidin-hydrochlorid [German] 2-Methylamino-4-N-methylpiperazino-5-methylthio-6-chloropyrimidine hydrochloride 50335-55-2 74039-21-7 O 6553 Pyrimidine, 6-chloro-2-methylamino-4-(4-methylpiperazino)-5-methylthio-, hydrochloride