3',4'-Methylenedioxy-2-(4-piperonyl-piperazin-1-yl)acetophenone dihydrochloride 4-Piperonyl-1-piperonyloylmethylpiperazine dihydrochloride 6761-64-4 ACETOPHENONE, 3',4'-METHYLENEDIOXY-2-(4-PIPERONYLPIPERAZIN-1-YL)-, DIHYDROCHLORI Acetophenone, 3',4'-methylenedioxy-2-(4-piperonylpiperazin-1-yl)-, dihydrochloride Acetopiperone, 2-(4-piperonylpiperazin-1-yl)-, dihydrochloride