This chemical is widely used in bioconjugation and click chemistry applications. Its azide group allows for efficient and selective reactions with alkyne-functionalized molecules, making it a valuable tool in the development of drug delivery systems, targeted therapies, and diagnostic agents. The PEG (polyethylene glycol) segment enhances solubility and stability, reducing immunogenicity and improving the pharmacokinetics of conjugated molecules. It is particularly useful in the synthesis of antibody-drug conjugates (ADCs), where precise attachment of therapeutic agents to antibodies is crucial. Additionally, it plays a role in surface modification of nanoparticles and biomaterials, enabling the creation of functionalized platforms for biomedical research and therapeutic applications.