This compound is widely used in bioconjugation and click chemistry applications. It serves as a linker or spacer molecule in the synthesis of complex biomolecules, enabling the attachment of azide-functionalized molecules to alkyne-containing substrates. Its PEG (polyethylene glycol) chain provides solubility and flexibility, making it suitable for modifying peptides, proteins, and other biomolecules. It is also employed in drug delivery systems to enhance the stability and bioavailability of therapeutic agents. Additionally, it plays a role in surface functionalization for materials science and nanotechnology applications.