Carbonyl compounds are organic molecules that contain a carbon atom double-bonded to an oxygen atom, known as a carbonyl group (C=O). This functional group is found in various types of compounds, including aldehydes, ketones, carboxylic acids, and esters. The presence of the carbonyl group significantly influences the chemical properties and reactivity of these compounds. These compounds play essential roles in both natural and synthetic processes. For example, aldehydes are often used in the production of fragrances and flavorings, while ketones are important solvents in industrial applications. Understanding carbonyl compounds is crucial in fields like organic chemistry and biochemistry.