title: C4H6
text: # C4H6
  
  The molecular formula $C_4H_6$ (molar mass: 54.09 g/mol) may refer to:
  
  * 1,3-Butadiene
  * 1,2-Butadiene
  * Bicyclobutane
  * Cyclobutene
  * Dimethylacetylene (2-butyne)
  * 1-Methylcyclopropene
  * 3-Methylcyclopropene
  * Methylenecyclopropane
  * Trimethylenemethane
  * 1-butyne
  