Used as a high-performance polymer precursor, particularly in the synthesis of aramid-like fibers and polybenzoxazoles (PBOs), known for exceptional thermal stability and mechanical strength. Commonly applied in aerospace, defense, and protective materials such as heat-resistant textiles and ballistic armor. Also serves as a crosslinking agent in advanced composite resins and functional coatings requiring durability under extreme conditions. Its reactive amino and hydroxyl groups enable use in specialty dyes, sensors, and electroactive materials.