This chemical is widely used in biomedical research and diagnostics due to its fluorescent properties. It serves as a labeling agent for biomolecules such as proteins, antibodies, and nucleic acids, enabling their visualization and tracking in various experimental setups. Its PEG4 linker enhances solubility and reduces non-specific binding, making it ideal for in vitro and in vivo imaging applications. Additionally, it is utilized in fluorescence microscopy, flow cytometry, and molecular imaging studies to monitor cellular processes, protein interactions, and drug delivery systems. Its stability and bright emission in the near-infrared range make it particularly useful for deep-tissue imaging and long-term tracking in biological systems.