Cyclic compounds (1)
Biphenyl (92-52-4, 68409-73-4)
diphenyl · diphenyl, 14C-labeled
Biphenyl (or diphenyl or phenylbenzene or 1,1′-biphenyl or lemonene) is an organic compound that forms colorless crystals. Particularly in older literature, compounds containing the functional group consisting of biphenyl less one hydrogen (the site at which it is attached) may use the prefixes xenyl or diphenylyl. It has a distinctively pleasant smell.
Perillene is a natural monoterpene that consists of a furan ring with a six-carbon homoprenyl side chain. Perillene is a component of the essential oil obtained by extraction of the leaves of Perilla frutescens. Perillene has also been obtained by steam distillation of the leaves of Perilla frutescens.
Rosefuran (3-methyl-2-prenylfuran) is a liquid boiling at 103-104 °C (at 50 mm Hg), with a density of 0.9089 g/cm3 (at 30 °C), less than that of water. It is an aroma chemical which is a minor constituent of the aroma of the rose (Rosa damascene). Rosefuran is a 2,3-disubstituted furan (3-methyl-2-(3-methyl-2-buten-1-yl)furan).