Undecane is a straight-chain alkane with the chemical formula C11H24. It consists of eleven carbon atoms and is part of the larger family of hydrocarbons. Undecane is a colorless liquid at room temperature and is primarily used in research and industrial applications, including as a solvent and in the production of other chemicals. This compound is found in small quantities in certain natural sources, such as petroleum and vegetable oils. Like other alkanes, undecane is relatively non-reactive, making it stable under normal conditions. Its properties make it useful in various applications, including as a reference standard in gas chromatography.