This chemical is widely used in bioconjugation and drug delivery systems due to its bifunctional nature, which allows it to act as a linker between molecules. Its polyethylene glycol (PEG) spacer provides solubility, reduces immunogenicity, and enhances stability in biological environments. It is commonly employed in the development of targeted therapeutics, such as antibody-drug conjugates, where it connects the drug molecule to the targeting agent. Additionally, it is utilized in the modification of proteins, peptides, and nanoparticles to improve their pharmacokinetic properties. Its applications also extend to material science, where it is used in the synthesis of hydrogels and other biocompatible materials for tissue engineering and regenerative medicine.