What is "undecylenic acid"

n. (context fatty acid pharmaceutical drug English) An organic unsaturated fatty acid derived from natural castor oil (ricinoleic acid). It has fungicidal properties and is used in the treatment of skin disorders, nail fungus etc.

n. an acid that is a component of perspiration

Undecylenic acid is a organic compound unsaturated with the formula CH=CH(CH)COH. It is an unsaturated fatty acid and forms a colorless oil at room temperature and pressure. Undecylenic acid is mainly used for the production of Nylon-11, but it is also a precursor in the manufacture of pharmaceuticals, personal hygiene products, cosmetics, and perfumes.