Used as a multifunctional crosslinking agent in polymer chemistry, particularly in the synthesis of high-performance thermosetting resins. Its four cyanophenoxy groups enable efficient network formation, enhancing thermal stability and mechanical strength of the resulting polymers. Commonly applied in advanced composite materials, coatings, and electronic encapsulants where durability and heat resistance are critical. Also explored as a building block in covalent organic frameworks (COFs) due to its rigid, symmetrical structure and reactive sites.