2-(4-Piperonyl-1-piperazinyl)pyrimidine hydrochloride 3605-01-4 78213-63-5 Piribedil hydrochloride Pyrimidine, 2-(4-(1,3-benzodioxol-5-ylmethyl)-1-piperazinyl)-, monohydrochloride Pyrimidine, 2-(4-piperonyl-1-piperazinyl)-, hydrochloride