1,2-Bis(1,3-benzodioxol-5-yl)-2-hydroxyethanone 4720-82-5 5-19-12-00046 (Beilstein Handbook Reference) AI3-03738 BRN 0327019 Ethanone, 1,2-bis(1,3-benzodioxol-5-yl)-2-hydroxy- Piperoin Piperonyloin