Used primarily as a fluorescent probe in biological imaging due to its strong emission properties in non-polar environments. It serves as a key intermediate in synthesizing fluorescent dyes for detecting membrane potential changes in live cells. Also employed in the development of sensors for monitoring intracellular pH and reactive oxygen species. Its high photostability and large Stokes shift make it suitable for confocal microscopy and flow cytometry applications. Additionally, it is utilized in the design of organic light-emitting diodes (OLEDs) and as a building block in photochemical research.