1-(Acetonyl)-3,4-methylenedioxybenzene 2-Propanone, 1-(1,3-benzodioxol-5-yl)- 2-Propanone, 1-[3,4-(methylenedioxy)phenyl]- 2-Propanone, [3,4-(methylenedioxy)phenyl]- 3,4-Methylenedioxybenzyl methyl ketone 4676-39-5 5-Acetonyl-1,3-benzodioxole Methyl piperonyl ketone NSC16688