(E)-1,3-Diethyl-8-(1-fluoro-2-phenylethenyl)-7-methyl-3,7-dihydro-1H-purine-2,6-dione (E)-1,3-Diethyl-8-(alpha-fluorostyryl)-7-methylxanthine 155271-69-5 1H-Purine-2,6-dione, 3,7-dihydro-1,3-diethyl-8-(1-fluoro-2-phenylethenyl)-7-methyl-, (E)-