Cyclic compounds (1)
1-METHYLNAPHTHALENE (90-12-0, 1321-94-4)
1-Methylnaphthalene is a polycyclic aromatic hydrocarbon (PAH). It has a cetane number of zero, and was previously used as the lower reference for cetane number. However, due to the expense and handling difficulty of 1-methylnaphthalene, it was replaced in this capacity by isocetane, with a CN of 15.
1-Phenyl-1-cyclohexene (31017-40-0, 71340-36-8, 771-98-2)
phenylcyclohexene · 1-phenylcyclohex-1-ene
4-Bromofluorobenzene is a halogenated aromatic organic compound with the formula C6H4BrF. It is a derivative of benzene, with a bromine atom bonded para to a fluorine atom. It has uses as a precursor to some pharmaceuticals, as an agrochemical intermediate, and in organic synthesis.
Furan is a heterocyclic organic compound, consisting of a five-membered aromatic ring with four carbon atoms and one oxygen. Chemical compounds containing such rings are also referred to as furans. Furan is a colorless, flammable, highly volatile liquid with a boiling point close to room temperature.
Cadalene or cadalin (4-isopropyl-1,6-dimethylnaphthalene) is a polycyclic aromatic hydrocarbon with a chemical formula C15H18 and a cadinane skeleton. It is derived from generic sesquiterpenes, and ubiquitous in essential oils of many higher plants. Cadalene, together with retene, simonellite and ip-iHMN, is a biomarker of higher plants, which makes it useful for paleobotanic analysis of rock sediments.