1-(1,3-Benzodioxol-5-ylmethyl)-4-(1-oxobutyl)piperazine 1-(3,4-Methylenedioxybenzyl)-4-(1-oxobutyl)piperazine 163130-28-7 Piperazine, 1-(1,3-benzodioxol-5-ylmethyl)-4-(1-oxobutyl)-