Undecylenic Acid is an organic compound that is widely used in the personal care and pharmaceutical industries. It is also used as a preservative, antifungal, and antimicrobial agent in various products. It is known by different names such as undecenoic acid, 10-undecenoic acid, and 1-undecene carboxylic acid. The compound is derived from castor oil and has a wide range of applications due to its chemical makeup. Other synonyms for undecylenic acid include Hendecenoic acid, 10-hendecenoic acid, and 1-hendecene-11-carboxylic acid. These names refer to the same organic compound and are commonly used in scientific literature and research.