This compound is widely used in bioconjugation and click chemistry applications. It serves as a linker molecule, enabling the attachment of biomolecules, such as proteins, peptides, or antibodies, to other functional groups or surfaces. The azido group allows for efficient copper-catalyzed azide-alkyne cycloaddition (CuAAC) reactions, while the bromoacetamido group facilitates thiol-based conjugation. It is particularly useful in drug delivery systems, where it helps in creating targeted therapeutics by linking drugs to carriers or antibodies. Additionally, it is employed in the development of bioprobes and diagnostic tools, where it aids in labeling and tracking biomolecules in research and clinical settings. Its water-soluble PEG4 spacer enhances biocompatibility and reduces steric hindrance during conjugation processes.