(E)-8-(2-(2-Chlorophenyl)ethenyl)-1,3-dipropyl-3,7-dihydro-1H-purine-2,6-dione (E)-8-(2-Chlorostyryl)-1,3-dipropylxanthine 151539-33-2 1H-Purine-2,6-dione, 3,7-dihydro-8-(2-(2-chlorophenyl)ethenyl)-1,3-dipropyl-, (E)-