(E)-1,3-Diethyl-8-(1-fluoro-2-phenylethenyl)-3,7-dihydro-1H-purine-2,6-dione (E)-1,3-Diethyl-8-(alpha-fluorostyryl)xanthine 155271-68-4 1H-Purine-2,6-dione, 3,7-dihydro-1,3-diethyl-8-(1-fluoro-2-phenylethenyl)-, (E)-