Pentane is a colorless, flammable liquid hydrocarbon with the chemical formula C5H12. It is part of the alkane family and consists of five carbon atoms connected in a straight chain. Pentane is commonly used as a solvent in laboratories and in the production of various chemicals. There are three structural isomers of pentane: n-pentane, isopentane, and neopentane. Each has different properties and uses. Pentane is also found in small amounts in natural gas and is used in the manufacture of gasoline and other fuels.