Octanoic acid, also known as caprylic acid, is a medium-chain fatty acid with an 8-carbon chain. It is found naturally in coconut oil and palm kernel oil. This compound is known for its antimicrobial properties and is often used in food preservation and as a flavoring agent. In culinary applications, it contributes to the flavor profile of dairy products and is recognized for its potential health benefits, including supporting gut health and providing energy. Its sensory characteristics include a fatty, slightly rancid odor, which can enhance the taste of certain foods. Octanoic acid is also studied for its role in ketogenic diets due to its ability to produce ketones.