Used as a key intermediate in the synthesis of fluorescent dyes and optical brighteners due to its ability to form stable conjugated systems. Its structure supports strong UV absorption and visible light emission, making it valuable in developing sensors and imaging agents. Also employed in the preparation of naphthopyran-based photochromic materials for lenses and specialty inks. Shows potential in organic electronics for light-emitting devices because of its electron-withdrawing cyano group combined with the extended aromatic framework.