{{DISPLAYTITLE:C5H8O2}} The molecular formula C5H8O2 may refer to: Acetylacetone Acetylpropionyl Allyl acetate Angelic acid Coffee furanone Cyclobutanecarboxylic acid Ethyl acrylate Glutaraldehyde Isopropenyl acetate Methyl methacrylate Tiglic acid Valerolactones δ-Valerolactone γ-Valerolactone Vinyl propionate