Used primarily in bioconjugation and drug delivery systems, this compound serves as a linker molecule to attach drugs or other functional groups to biomolecules like proteins or peptides. Its hydrophilic PEG (polyethylene glycol) chain enhances solubility and stability, while the nitrile group provides a reactive site for further chemical modifications. It is particularly valuable in creating antibody-drug conjugates (ADCs) and targeted therapies, improving bioavailability and reducing immunogenicity. Additionally, it finds use in materials science for surface modification and nanoparticle functionalization.