1-Butyne is an organic compound with the formula CH3CH2C≡CH.

The compound is a common terminal alkyne substrate in diverse studies of catalysis.

[1] 1-Butyne participates in reactions typical for terminal alkynes, such as alkyne metathesis,[2] hydrogenation, condensation with formaldehyde.

Based on its heat of combustion, it is slightly more stable than its isomer 2-butyne.

[3] This article about a hydrocarbon is a stub.