Used as a key intermediate in the synthesis of high-performance polymers, particularly in the production of liquid crystalline polyamides and polyimides. These materials exhibit excellent thermal stability, mechanical strength, and chemical resistance, making them suitable for aerospace, electronics, and high-temperature industrial applications. Also employed in the development of specialty coatings and films where durability and dimensional stability are critical. Its bifunctional structure (carboxylic acid and amide groups) allows for controlled polymerization and molecular design in advanced material science.