This compound is widely used in bioconjugation and chemical biology research due to its unique properties. The azide group enables click chemistry reactions, particularly copper-catalyzed azide-alkyne cycloaddition (CuAAC), making it valuable for labeling biomolecules such as proteins, peptides, and nucleic acids. The PEG (polyethylene glycol) spacers enhance solubility and reduce steric hindrance, improving reaction efficiency in aqueous environments. The Boc (tert-butoxycarbonyl) protecting groups allow for selective deprotection, enabling controlled modifications in multi-step synthesis. This compound is particularly useful in drug delivery systems, where it facilitates the attachment of targeting moieties or therapeutic agents to carriers. Additionally, it is employed in the development of biomaterials and surface functionalization for applications in tissue engineering and biosensors. Its versatility makes it a key tool in designing advanced molecular constructs for biomedical research.