irone

{{Short description|Chemical compound}}

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| caption2 = Chemical structures of (−)-cis-γ-irone (top) and (−)-cis-α-irone

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Irones are a group of methylionone odorants used in perfumery, derived from iris oil,Council of Europe, August 2007 {{Google books|e8OwTIHMJDAC|Natural Sources of Flavourings, Volume 2|page=103}} e.g. orris root. The most commercially important of these are:

• (−)-cis-γ-irone, and
• (−)-cis-α-irone

Irones form through slow oxidation of triterpenoids in dried rhizomes of the iris species, Iris pallida. Irones typically have a sweet floral, iris, woody, ionone, odor.