Phenols, ethers, and epoxides are important classes of organic compounds. Phenols feature a hydroxyl (-OH) group attached to an aromatic ring, with applications in antiseptics and antioxidants. Ethers consist of two organic groups connected by an oxygen atom, widely used as solvents and anesthetics. Epoxides are three-membered ring compounds containing an oxygen, employed in various chemical reactions like epoxidation. These compounds have diverse applications in both the chemical and pharmaceutical industries.