C4H5
C4H5 is a molecular formula that can represent several different chemical compounds, all of which contain four carbon atoms and five hydrogen atoms. These compounds are unsaturated hydrocarbons, meaning they contain at least one carbon-carbon double or triple bond. The presence of these multiple bonds accounts for the lower hydrogen-to-carbon ratio compared to a saturated alkane like butane (C4H10).
One common isomer with the formula C4H5 is but-1-yne, also known as 1-butyne. This molecule is an
Other C4H5 isomers exist, including various cyclic compounds and alkenes with a more complex arrangement of