Phenols are a class of organic compounds characterized by a hydroxyl group (-OH) attached to an aromatic hydrocarbon ring. They are known for their antiseptic properties and are commonly found in products like disinfectants and antiseptics. The simplest phenol is phenol itself, which is used in various industrial applications, including the production of plastics and resins. In addition to their industrial uses, phenols play a role in nature, as they are found in many plants and contribute to their flavor and aroma. Some phenolic compounds, such as flavonoids, are important for human health due to their antioxidant properties. Overall, phenols are significant in both chemistry and biology.