Estragole (EG)

Estragole is a phenylpropene, a natural organic compound. Its chemical structure consists of a benzene ring substituted with a methoxy group and a propenyl group. It is an isomer of anethole, differing with respect to the location of the double bond. It is a colorless liquid, although impure samples can appear yellow. It is a component of various herbs and is used in the preparation of fragrances. Hundreds of tonnes of basil oil are produced annually by steam distillation of Ocimum basilicum. This oil is mainly estragole but also contains substantial amounts of linalool. Estragole is used in perfumes and as a food additive for flavor. Upon treatment with potassium hydroxide, estragole converts to anethole. Estragole is suspected to be carcinogenic and genotoxic, as is indicated by a report of the European Union, Committee on Herbal Medicinal Products.