C4H6O2
# C4H6O2

The molecular formula $C_4H_6O_2$ 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 $CH_3(C=O)CH_2CHO,$ but it only exists as a salt of the enol, sodium formyl acetone.
