Used as a building block in the synthesis of liquid crystal polymers and high-performance engineering plastics due to its rigid aromatic structure. It contributes thermal stability and mechanical strength to polymer chains. Also employed in the preparation of metal-organic frameworks (MOFs) for gas storage and catalysis. Its dicarboxylic functionality allows coordination with metal ions, making it useful in designing porous materials. Additionally, it serves as an intermediate in organic synthesis for pharmaceuticals and specialty chemicals.