Used as a key intermediate in the synthesis of advanced organic materials, particularly in the development of liquid crystal polymers and high-performance resins. Its rigid biphenyl backbone and reactive aldehyde groups enable cross-linking and functionalization for tailored thermal and mechanical properties. Employed in research for optoelectronic applications, including organic semiconductors and sensors, due to its conjugated structure and ability to form Schiff bases. Also explored in metal-organic frameworks (MOFs) for catalysis and gas storage, leveraging its dual aldehyde and hydroxyl functionality for coordination with metal ions.