Cycloheptane is a seven-membered cyclic hydrocarbon with the chemical formula C7H14. It is a colorless liquid that is widely used in organic chemistry. The term "cycloheptane" can be replaced by a few synonyms such as heptacyclohexane, perhydropentalene, heptalene, and septalene. These synonyms are derived based on their chemical structure and properties. Heptacyclohexane is named so because its cyclic structure resembles a heptagon and has a hexane-like structure, whereas perhydropentalene refers to its pentene-like structure. Heptalene and Septalene depict the aromatic character of the compound. These synonyms can come in handy when you need to refer to cycloheptane using different names for scientific or chemical purposes.