Used as a key intermediate in the synthesis of fluorescent dyes and optical brighteners due to its ability to form stable conjugated systems. Commonly employed in the development of sensors for metal ions, especially for detecting aluminum and zinc in environmental and biological samples. Plays a role in pharmaceutical research, particularly in the design of compounds with antimicrobial and antitumor activities. Its derivatives are also explored in organic electronics for use in light-emitting diodes (OLEDs) and other optoelectronic devices.