Used in bioconjugation reactions for labeling biomolecules, particularly in fluorescence-based assays. Its azide group enables click chemistry with alkynes, allowing selective and efficient attachment to proteins, antibodies, or nucleic acids. The BDP FL fluorophore provides strong green fluorescence with high quantum yield, making it ideal for imaging, flow cytometry, and detection in biological systems. Stable under physiological conditions and compatible with live-cell labeling, it is widely applied in research for tracking molecular interactions and cellular processes.