Widely used in organic synthesis, particularly as a building block for fluorescent dyes and optoelectronic materials. Its structure allows for easy functionalization, making it valuable in the development of sensors and imaging agents. Commonly employed in the preparation of naphthalimide derivatives, which exhibit strong fluorescence and are applied in bioimaging, cell labeling, and as probes in biological systems. Also utilized in the fabrication of organic semiconductors and light-emitting diodes (OLEDs) due to its electron-accepting properties and thermal stability. Its bromo substituent enables cross-coupling reactions, facilitating the synthesis of complex aromatic systems for advanced material science and pharmaceutical research.