(+)-Isomenthone

(1R)-cis-p-Menthan-3-one; (1R)-cis-2 -isopropyl-5-methylcyclohexanone; C₁₀H₁₈O = 154.2

Contains variable amounts of menthone. A colourless liquid, very slightly soluble in water, soluble in ethanol (96%).

, about 0.904; , about 1.453; , +93.2.

Isomenthone used in gas chromatography complies with the following additional test.

Assay Gas chromatography (2.2.28) as prescribed in the monograph Peppermint oil (0405).

Test solution The substance to be examined.

Content, minimum 80.0%, calculated by the normalisation procedure.