Indole

Indole (CAS 120-72-9, EC 204-420-7, formula C8H7N) is a naturally occurring bicyclic compound found in coal tar, jasmine oil, and various plant sources. It is also known by the trade designations FEMA 2593 and NSC 1964, and appears in supplier catalogues under the synonyms indol and 1H-Indol. No E-code is assigned.

In food and fragrance applications, indole functions as a flavorant and odorant at trace concentrations, where it contributes floral and animalic notes to perfume compositions and flavour systems. In personal care formulations it serves as a precursor in oxidative hair dye chemistry, reacting with developer systems to produce colour. It also acts as an antioxidant intermediate in certain printing ink and packaging coating formulations.

Indole is available as a crystalline powder in technical and fragrance grades, subject to REACH registration requirements for EU supply. Procurement quantities typically range from kilogram packs to multi-kilogram drums. Buyers should confirm grade suitability against FCC or relevant food-contact standards prior to use.