Used as a crosslinking agent in polymer chemistry, particularly in the modification of proteins and peptides for bioconjugation. It enables the formation of stable covalent bonds between amino groups, making it valuable in the development of diagnostic probes, immunoconjugates, and functional biomaterials. Its reactivity with primary amines allows for controlled network formation in hydrogels and other crosslinked matrices. Also applied in surface functionalization of biomaterials and in the preparation of affinity ligands due to its spacer arm characteristics and bifunctional reactivity.