Used as an intermediate in the synthesis of dyes, fluorescent agents, and organic conductive compounds, particularly in industrial color production, optical materials, and OLED displays. It also functions as an antioxidant in polymers and elastomers, especially in rubber products to prevent degradation from heat, light, UV radiation, and oxygen. This helps extend the service life of rubber components such as tires, hoses, and belts by inhibiting oxidative aging, as well as certain plastics. Additionally, it is employed in lubricants and greases to improve thermal stability and reduce sludge formation under high-temperature conditions. Its sterically hindered structure enhances performance in demanding environments.