Used as a fluorescent probe in biological and environmental sensing due to its strong fluorescence and sensitivity to pH changes. Commonly applied in the development of sensors for metal ions and reactive oxygen species. Serves as a building block in the synthesis of more complex fluorophores, pharmaceuticals, anti-inflammatory agents, antimicrobials, and antioxidants. Also utilized in sunscreen and cosmetic formulations for its UV-absorbing properties and potential anti-aging benefits. Plays a role in dye lasers as a lasing medium because of its favorable photophysical characteristics.