This chemical is primarily used in bioconjugation and drug delivery systems. It serves as a linker molecule, connecting different components such as drugs, proteins, or nanoparticles. The amine group allows for easy attachment to various biomolecules, while the PEG (polyethylene glycol) spacer enhances solubility and reduces immunogenicity. The chlorine atom provides a reactive site for further functionalization, making it versatile for creating targeted therapeutics. It is also employed in the development of antibody-drug conjugates (ADCs) and other targeted therapies, improving the precision and efficacy of treatments. Additionally, it finds applications in surface modification of materials for biomedical devices, enhancing biocompatibility and performance.