Used in bioconjugation and click chemistry applications, this compound facilitates the attachment of biomolecules to surfaces or other molecules. Its azide group enables efficient reactions with alkynes via copper-catalyzed azide-alkyne cycloaddition (CuAAC). The PEG5 spacer enhances solubility and reduces steric hindrance, making it suitable for modifying proteins, peptides, and nanoparticles. It is also employed in drug delivery systems to improve biocompatibility and target specificity. Additionally, it is utilized in the development of diagnostic probes and imaging agents for biomedical research.