Butylene is a hydrocarbon with the chemical formula C4H8. This organic compound is commonly used in the production of various chemicals such as butadiene, butynes, methyl ethyl ketone, and alkylated benzene. Butylene can also be used as a fuel additive and is commonly found in gasoline. There are several synonyms for butylene that are used in different contexts. They include 1-Butylene, Butene, 1-Butene, Butylene-1, and Ethylethylene. These synonyms are used interchangeably in scientific research, chemical processing, and industries that use butylene as a feedstock. They represent different isomers or forms of the same chemical compound, each of which has unique properties and uses.