1H-Purine-2,6-dione, 8-[2-(1,3-benzodioxol-5-yl)ethenyl]-3,7-dihydro-1,3-dimethyl- 73908-79-9 8-[3,4-(Methylenedioxy)styryl]theophylline NSC106220 Theophylline, 8-[3,4-(methylenedioxy)styryl]-