« Back to terpenes


Fenchone is a bicyclic monoterpene ketone, with the two enantiomers (+)- and (-)-fenchone.

Molecular formula

C10 H16

Molar mass

152.23 g

Physical state



insoluble in water, highly soluble in ethanol


Fenchone may be found in fennel, rosemary, hops, nutmeg, and pine oil, in hemp, and the peel of various citrus fruits. This substance has a bitter taste and smells of camphor.

Medicinal properties

Fenchone has an antiseptic effect and inhibits the growth of fungi and bacteria. In addition, it is used in the treatment of mild inflammations of the upper respiratory tract. Further indications are urinary tract infections and intestinal complaints. In higher doses, it has a stimulating effect on the human organism.