(E)-1,3-Dipropyl-7-methyl-8-(2-(3-nitrophenyl)ethenyl)-3,7-dihydro-1H-purine-2,6-dione (E)-7-Methyl-8-(3-nitrostyryl)-1,3-dipropylxanthine 147700-41-2 1H-Purine-2,6-dione, 3,7-dihydro-1,3-dipropyl-7-methyl-8-(2-(3-nitrophenyl)ethenyl)-, (E)-