CH3CHCH2CH2CH3

CH3CHCH2CH2CH3 is the chemical formula for a branched-chain alkane. This molecule is an isomer of pentane, meaning it has the same chemical formula but a different structural arrangement of atoms. Specifically, it is 2-methylbutane. The structure consists of a four-carbon chain with a methyl group (CH3) attached to the second carbon atom.

2-methylbutane is a colorless, volatile liquid at room temperature and pressure. It is flammable and has a characteristic gasoline-like odor. Like other alkanes, it is nonpolar and therefore insoluble in water but soluble in organic solvents such as ethanol and ether. Its boiling point is lower than that of n-pentane, the straight-chain isomer, due to weaker intermolecular van der Waals forces resulting from its more compact structure.

This compound is a component of gasoline and is used as a solvent and in organic synthesis. It can be produced through various refining processes in the petroleum industry. The branched structure of 2-methylbutane contributes to the octane rating of gasoline, making it a valuable component for internal combustion engines.