This chemical is primarily used in bioconjugation and click chemistry applications due to its PEG (polyethylene glycol) spacers and azide functional groups. The azide groups enable efficient and selective reactions with alkynes via copper-catalyzed azide-alkyne cycloaddition (CuAAC), making it valuable for labeling, modifying, or crosslinking biomolecules such as proteins, peptides, or nucleic acids. The Boc (tert-butyloxycarbonyl) protecting group allows for controlled deprotection, enabling sequential functionalization. Its PEG spacers enhance solubility, reduce immunogenicity, and improve biocompatibility, making it suitable for drug delivery systems, bioconjugate synthesis, and surface modification in biomedical research.