Used in bioconjugation to label biomolecules such as proteins, peptides, and antibodies for fluorescence detection. Its high photostability and bright fluorescence make it ideal for imaging applications, including cellular tracking and microscopy. Commonly employed in developing fluorescent probes and sensors due to its sharp emission peaks and low sensitivity to environmental changes. Also utilized in flow cytometry and fluorescence-based assays where strong signal intensity and minimal background interference are required.