(E)-1,3-Diethyl-8-(2-(2,5-dimethylphenyl)ethenyl)-7-methyl-3,7-dihydro-1H-purine-2,6-dione (E)-8-(2,5-Dimethylstyryl)-1,3-diethyl-7-methylxanthine 155271-27-5 1H-Purine-2,6-dione, 3,7-dihydro-1,3-diethyl-8-(2-(2,5-dimethylphenyl)ethenyl)-7-methyl-, (E)-