This compound is widely used in bioconjugation and click chemistry applications due to its unique structure. The Boc group serves as a protective moiety, allowing selective deprotection when needed, while the PEG3 spacer enhances solubility and reduces steric hindrance in reactions. The endo-BCN group is particularly valuable for bioorthogonal reactions, enabling efficient and specific conjugation with azide-functionalized molecules. This makes it a key reagent in the development of targeted drug delivery systems, antibody-drug conjugates, and labeling of biomolecules for imaging or diagnostic purposes. Its stability and reactivity also make it suitable for use in complex biological environments, such as live-cell labeling and in vivo studies. Additionally, it is employed in the synthesis of peptide-based therapeutics and materials science for surface functionalization.