4-Hydroxydiphenylamine

4-Hydroxydiphenylamine (p-Anilinophenol; 4-Hydroxy-DPA) is an aromatic amine organic compound. 4-Hydroxydiphenylamine has antioxidant activity and is also used as a catalyst or intermediate in some chemical reactions to synthesize other compounds. 4-Hydroxydiphenylamine can be used in the research of environmental science and toxicology.