(E)-1,3-Diallyl-8-(3,4-dimethoxystyryl)xanthine (E)-8-(2-(3,4-Dimethoxyphenyl)ethenyl)-1,3-di-2-propenyl-3,7-dihydro-1H-purine-2,6-dione 155814-27-0 1H-Purine-2,6-dione, 3,7-dihydro-8-(2-(3,4-dimethoxyphenyl)ethenyl)-1,3-di-2-propenyl-, (E)-