Sep 16, 2005 · Application of the method to the enantiomeric analysis of menthol in mint plants proved simple and feasible. Toluene was used for the extraction of menthol from the leaves of mint, and the resulting toluene extract was directly used for subsequent derivatization without solvent replacement. 1. Introduction.

Oct 5, 2019 · d-menthol and l-menthol being enantiomers, shouldn't they have identical physical properties including the m.p.? The two enantiomers of a molecule possess the same physical properties ( e.g. , melting point, boiling point, polarity etc.) and so behave identically to each other.

Sep 16, 2005 · The concentration and distribution of menthol enantiomers have great significance in discriminating natural mint varieties and evaluating the origin of foodstuffs containing menthol additives. However, the chiral separation of eight chiral menthol enantiomers in Mentha plants offers an easy approach to eliminating or reducing the identification ...

Menthol is an organic compound, specifically a monoterpenoid, that occurs naturally in the oils of several plants in the mint family, such as corn mint and peppermint. It is a white or clear waxy crystalline substance that is solid at room temperature and melts slightly above.

Sep 16, 2005 · A simple and sensitive liquid chromatography is described for the quantitative analysis of enantiomeric (+)-menthol and (-)-menthol that are lack of chromophore. The method is based on the derivatization of (+)-menthol and (-)-menthol with a fluorescent reagent, naproxen acyl chloride, in toluene.

It is an enantiomer of a (+)-menthol. Menthol is a covalent organic compound made synthetically or obtained from peppermint or other mint oils. Forming clear or white waxy, crystalline substance, menthol is typically solid at room temperature.

In the present study, we investigate the gas-phase structures and conformational space of menthol, menthone, and isomenthone based on vibrationally and rotationally cold gas-phase microwave spectra and quantum chemical calculations.

Among the four diastereomeric pairs of the eight menthol enantiomers, only (-)-menthol exerts a unique cooling sensation on the skin and mucous membranes and exhibits the characteristic peppermint odor.

The four diastereomers of menthol and their enantiomers, namely dl-menthol, dl-neomenthol, dl -neoisomenthol and dl -isomenthol, were synthesised by the hydrogenation of thymol to yield an eight isomer liquid menthol.

Dec 1, 2022 · Menthol enantiomers can be used to discriminate natural and synthetic menthol products. Mentha plants were discriminated on a molecular level. The method could be used for quality control and source identification of menthol.