1-(3-Methyl-2-butenyl)-4-(3,4-methylenedioxybenzyl)piperazine 1-(3-Methyl-2-butenyl)-4-(piperonyl)piperazine 55436-39-0 BRN 0818180 Piperazine, 1-(3-methyl-2-butenyl)-4-(3,4-methylenedioxybenzyl)-