This compound is widely used in bioconjugation and click chemistry applications, particularly in the development of biopharmaceuticals and drug delivery systems. Its azide group allows for efficient and selective reactions with alkyne-containing molecules, enabling the creation of stable triazole linkages. This property is especially valuable in the modification of proteins, peptides, and other biomolecules, where precise and controlled attachment is required. Additionally, the PEG (polyethylene glycol) spacer enhances solubility and reduces immunogenicity, making it ideal for improving the pharmacokinetic properties of therapeutic agents. It is also employed in the synthesis of targeted imaging probes and diagnostics, facilitating the study of biological processes at the molecular level.