Used as a fluorescent probe in biological imaging due to its strong emission in the visible range, enabling real-time tracking of cellular processes. Commonly employed in fluorescence microscopy and flow cytometry for labeling biomolecules like proteins and nucleic acids. Also serves as a key intermediate in synthesizing fluorescent dyes and sensors for detecting metal ions and pH changes in environmental and clinical samples. Its high quantum yield and photostability make it suitable for advanced optical applications, including laser dyes and light-harvesting systems.