(E)-1,3-Dibutyl-8-(2-(3,4,5-trimethoxyphenyl)ethenyl)-3,7-dihydro-1H-purine-2,6-dione (E)-1,3-Dibutyl-8-(3,4,5-trimethoxystyryl)xanthine 142665-37-0 1H-Purine-2,6-dione, 3,7-dihydro-1,3-dibutyl-8-(2-(3,4,5-trimethoxyphenyl)ethenyl)-, (E)-