Used extensively in bioconjugation and click chemistry applications, this compound serves as a versatile linker for attaching biomolecules, such as peptides, proteins, or antibodies, to other functional groups or surfaces. Its Boc-protected amine ensures selective deprotection for further modifications, while the PEG spacer enhances solubility and reduces steric hindrance. The azide group facilitates efficient and specific reactions with alkyne-functionalized molecules via copper-catalyzed azide-alkyne cycloaddition (CuAAC), making it valuable in drug delivery systems, polymer synthesis, and the development of diagnostic probes. Its applications also extend to surface functionalization in nanotechnology and the creation of bioactive materials for biomedical research.