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Identification of the Isomers of Carvomenthol by an Infrared Study of the OH-Stretching Vibration

Volume 41, Number 7 (Oct. 1987) Page 1251-1253

Lutz, E.T.G.; Van Der Schaaf, P.A.; Van Der Maas, J.H.

A natural mixture of carvomenthols has been separated by HPLC into its four possible isomers. The infrared spectra of the OH-stretching vibration have been recorded for each of these components as a solution in CCI4 and CS2. Identification of the isomers followed, on the basis of these spectral data and those of some reference compounds. Evidence is found for a ring-conversion equilibrium in iso-carvomenthol at ambient temperature.