Used as a key intermediate in the synthesis of high-performance polymers, particularly in the production of sulfone-based engineering plastics and epoxy resins. Its reactive hydroxyl groups enable cross-linking, enhancing thermal stability and mechanical strength of the resulting materials. Commonly employed in manufacturing heat-resistant coatings, adhesives, and electronic encapsulants due to its excellent oxidative stability and resistance to hydrolysis. Also utilized in the development of specialty polycarbonates and as a building block for antioxidants and UV stabilizers in polymer systems.