Used as a crosslinking agent in polymer chemistry, particularly in the development of hydrogels and biodegradable networks. Its symmetrical structure with active ester groups allows efficient coupling with amine-functionalized polymers, enhancing mechanical strength and stability. Commonly applied in biomedical fields for drug delivery systems and tissue engineering scaffolds due to its ability to form stable, biocompatible networks under mild reaction conditions. Also utilized in bioconjugation processes where controlled linkage of biomolecules is required.