Used as a key intermediate in the synthesis of high-performance polymers, particularly in the production of polycarbonates and epoxy resins. Its rigid biphenyl structure and methyl substituents enhance thermal stability and resistance to oxidation, making it suitable for engineering plastics used in electronics, automotive components, and aerospace materials. Also employed in the development of specialty antioxidants and stabilizers for polymers exposed to harsh environments. Additionally, it serves as a building block in the preparation of liquid crystals and other advanced organic materials requiring high purity and structural rigidity.