Butene

Butene is the third occurring chemical compound in the alkene series of compounds. It has the chemical formula C4H8. Butene is made in laboratories. Butane is  formed from covalent bonds between hydrogen and carbon atoms.

There are four isomers, and all are gases at room temperature.
All four of these hydrocarbons have four carbon atoms and one double bond in their molecules, but have different chemical structures. The IUPAC and common names, respectively, of these chemical compounds are:
 IUPAC name Common name Structure Skeletal formula 3D modelBut-1-ene α-butylene 210px 150px 150px(2Z)-but-2-ene cis-β-butylene 170px 120px 150px(2E)-but-2-ene trans-β-butylene 170px 120px 150px2-methylprop-1-ene Isobutylene 145px 100px 120px

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