Used as a key intermediate in the synthesis of high-performance fluorescent dyes and pigments, particularly in the production of naphthalimide-based fluorophores. These fluorophores are applied in biological imaging, sensors, and optoelectronic devices due to their strong fluorescence and photostability. Also employed in the development of organic semiconductors and as a building block for functional polymers with applications in solar cells and light-emitting diodes (OLEDs). Its electron-deficient structure makes it valuable in designing charge-transport materials.