Indole is a very powerful molecule used in both masculine and feminine fragrances. It is a naturally-occurring chemical, found in many essential oils, especially in glorious white flowers like jasmine, orange blossom, and neroli, as well as in wallflowers and some citrus fruits. Its long history of use in the fragrance industry has resulted in a familiarity that allows many of us to consider it just another aroma chemical. Its early identification in jasmine flowers has developed a tradition of its use in floral compositions. It finds its way into most floral creations. Indole is one of the first heterocyclic materials that became available to the fragrance industry, and is thus a member of a family of potent aroma chemicals. Indole is often used in conjunction with benzyl acetate, but for every kilogram of benzyl acetate employed in the flavor and fragrance industry, only about 5 grams of indole are used. In very low concentrations, indole shows a brilliant, radiant, powerful floral effect which recalls jasmine and tuberose. However, when the indole concentrations reach 1% or greater, especially when neat, an aggressive, repulsive, overpowering fecal-decaying impression is encountered.
Natural or Synthetic?
Indole, a compound with a distinct floral aroma, is present naturally in flowers like jasmine and synthetically manufactured. Natural extraction from flowers is complex and costly, leading to the frequent use of synthetic indole in perfumery to achieve a consistent and intense floral character.
Fragrance Families Indole Most Commonly Found In
Show fragrances that contain Indole as a note