title: C4H6O2
text: # 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.
  