Ester is a chemical compound known as an ester, which is formed from the reaction of an alcohol and a carboxylic acid. Esters are characterized by their pleasant, fruity odors and are commonly found in nature, often contributing to the aroma of fruits and flowers. They are widely used in the food industry as flavoring agents and in the production of fragrances. In addition to their use in food and cosmetics, esters play a significant role in various industrial applications. They are used as solvents in paints and coatings, as well as in the manufacture of plastics and polymers. Some common examples of esters include ethyl acetate and methyl butyrate.