1-(3,4-Methylenedioxybenzyl)-4-(4-pyrimidyl)piperazine hydrochloride 21280-17-1 4-(4-Piperonyl-1-piperazinyl)pyrimidine dihydrochloride Pyrimidine, 4-(4-piperonyl-1-piperazinyl)-, dihydrochloride