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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).

ChEBI: (-)-isomenthone is an isomenthone. It is an enantiomer of a (+)-isomenthone.

By hydrogénation of piperitone.

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).