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Fenchols are bicyclic monoterpene alcohols, with the stereoisomers alpha- and beta-fenchol, each with the enantiomers (+)- and (-)-.

Molecular formula

C10 H18

Molar mass

154.25 g

Physical state



virtually insoluble in water


Fenchols may be found in rosemary, hops, nutmeg and pine oil, in hemp as well as in the peel of various citrus fruits.

Medicinal properties

Fenchols act as antioxidants and anticoagulants, and have a positive influence on gastrointestinal activity. Studies have shown that fenchols are also able to inhibit the growth of tumor cells and to support the absorption of therapeutic drugs.