d-Isomenthone has been reported to have been isolated from Micromeria abissinica
Benth., Pelargonium tomentosum Jacquin and others. /-Isomenthone has been identified in Reunion
geranium, Pelargonium capitatum and others (FenaroWs Handbook of Flavor Ingredients, 1971).
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Isomenthone has very interesting effects in Rose, Carnation, Muguet, Fougeres, Lavender-complexes, etc. The use concentration will normally be about 0.5 to 200, but it may be somewhat higher in Rose and Lavender. The spicy notes in certain types of Men’s fragrances can eliminate the unpleasant sweetness brought about by the conventional Spice and Fougere fixatives.
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By hydrogénation of piperitone.
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d-Isomenthone undergoes reduction in the rabbit, since d-isomethylglucuronide is
excreted in the urine. The other possible reduction product, d-neoisomenthol is not excreted (Williams, 1959).
