(E)-8-(2-(3,4-Dimethylphenyl)ethenyl)-1,3-dipropyl-3,7-dihydro-1H-purine-2,6-dione (E)-8-(3,4-Dimethylstyryl)-1,3-dipropylxanthine 151539-29-6 1H-Purine-2,6-dione, 3,7-dihydro-8-(2-(3,4-dimethylphenyl)ethenyl)-1,3-dipropyl-, (E)-