This chemical is widely used in bioconjugation and click chemistry applications due to its azido and PEG (polyethylene glycol) functionalities. The azido group enables efficient and selective reactions with alkyne-containing compounds through copper-catalyzed azide-alkyne cycloaddition (CuAAC), making it valuable for labeling, modifying, or crosslinking biomolecules such as proteins, peptides, and nucleic acids. The Boc (tert-butoxycarbonyl) group provides temporary protection for amines during synthesis, allowing for controlled deprotection in subsequent steps. Additionally, the PEG spacers enhance solubility, reduce immunogenicity, and improve biocompatibility, making this compound suitable for drug delivery systems, bioconjugate development, and surface functionalization in biomedical research. The carboxylic acid group further allows for covalent attachment to other molecules or surfaces, expanding its utility in creating tailored biomaterials or probes.