C5H8O3

The molecular formula C5H8O3 may refer to:


 * Butylene carbonates
 * 1,2-Butylene carbonate
 * cis-2,3-Butylene carbonate
 * trans-2,3-Butylene carbonate
 * Hydroxyethyl acrylate
 * α-Ketoisovaleric acid
 * α-Ketovaleric acid
 * Levulinic acid
 * 3-Oxopentanoic acid
 * Tetrahydro-2-furoic acid