This chemical is widely used in bioconjugation and labeling applications due to its unique properties. The azide group allows for click chemistry reactions, particularly copper-catalyzed azide-alkyne cycloaddition (CuAAC), making it valuable for attaching to biomolecules like proteins, peptides, or nucleic acids. The PEG (polyethylene glycol) chains enhance solubility and reduce nonspecific interactions, which is crucial for in vivo and in vitro studies. The benzothiazole moiety provides stability and can interact with specific biological targets, while the Cy5 fluorophore enables fluorescence imaging, making it ideal for tracking and visualizing biological processes in real-time. This compound is particularly useful in fluorescence microscopy, flow cytometry, and in vivo imaging studies, where high sensitivity and specificity are required. Its design allows for efficient labeling of biomolecules without significantly altering their function, making it a versatile tool in molecular biology and drug development research.