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