(E)-1,3-Dipropyl-8-(2-(4-methoxy-1-naphthalenyl)ethenyl)-3,7-dihydro-1H-purine-2,6-dione (E)-8-(2-(4-Methoxynaphthyl)vinyl)-1,3-dipropylxanthine 151539-63-8 1H-Purine-2,6-dione, 3,7-dihydro-1,3-dipropyl-8-(2-(4-methoxy-1-naphthalenyl)ethenyl)-, (E)-