Used in bioconjugation and drug delivery systems, this compound serves as a linker to attach targeting molecules or drugs to nanoparticles or proteins. Its PEG (polyethylene glycol) chains enhance solubility and stability, reducing immunogenicity and prolonging circulation time in the body. The maleimide group allows for selective conjugation with thiol-containing molecules, while the glutamic acid moiety provides a site for further functionalization. It is particularly useful in antibody-drug conjugates (ADCs) and targeted cancer therapies, where precise delivery of therapeutic agents is critical. Additionally, it finds applications in diagnostic imaging and biosensor development due to its ability to create stable, biocompatible linkages.