(E)-8-(2-(1,3-Benzodioxol-5-yl)ethenyl)-1,3-dimethyl-3,7-dihydro-1H-purine-2,6-dione (E)-8-(3,4-Methylenedioxystyryl)theophylline 155271-18-4 1H-Purine-2,6-dione, 3,7-dihydro-8-(2-(1,3-benzodioxol-5-yl)ethenyl)-1,3-dimethyl-, (E)-