Used as a fluorescent probe in analytical chemistry due to its strong emission properties, particularly in detecting metal ions and anions in solution. Its structure allows for easy functionalization, making it a key intermediate in synthesizing dyes and optoelectronic materials. Commonly applied in environmental monitoring for sensing hazardous substances and in bioimaging for cellular labeling. Also utilized in the development of organic semiconductors and light-emitting diodes (LEDs) because of its electron-accepting characteristics and thermal stability.