C4H6O2

The molecular formula C4H6O2 may refer to:


 * 1,4-Butynediol
 * Butyrolactones
 * β-Butyrolactone
 * γ-Butyrolactone
 * Crotonic acid
 * Diacetyl, or butanedione
 * Diepoxybutane
 * 1,4-Dioxene
 * Isocrotonic acid
 * Methacrylic acid
 * Methyl acrylate
 * Succinaldehyde
 * Vinyl acetate
 * Butenoic acid
 * Formyl acetone, technically CH3(C\dO)CH2CHO, but it only exists as a salt of the enol, sodium formyl acetone.