(organic chemistry) Any salt or ester of undecylenic acid

plural of undecylenate

(biochemistry, steroids) The undecylenate ester of the anabolic steroid boldenone, developed for veterinary use, mostly for treatment of horses.

(organic chemistry, pharmacology) 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.