(E)-1,3-Diethyl-8-(2-(4-(dimethylamino)phenyl)ethenyl)-3,7-dihydro-1H-purine-2,6-dione (E)-8-(4-(N,N-Dimethylamino)styryl)-1,3-diethylxanthine 155271-92-4 1H-Purine-2,6-dione, 3,7-dihydro-1,3-diethyl-8-(2-(4-(dimethylamino)phenyl)ethenyl)-, (E)-