(E)-3-(4-(1,3-Dibutyl-2,3,6,7-tetrahydro-2,6-dioxo-1H-purin-8-yl)phenyl)-2-propenoic acid (E)-4-(1,3-Dibutyl-1,2,3,6-tetrahydro-2,6-dioxo-9H-purin-8-yl)cinnamic acid 106465-53-6 2-Propenoic acid, 3-(4-(1,3-dibutyl-2,3,6,7-tetrahydro-2,6-dioxo-1H-purin-8-yl)phenyl)-, (E)-