Used as an intermediate in organic synthesis, particularly in the development of pharmaceuticals and functional materials. Its bromine functionality allows for cross-coupling reactions, enabling the construction of complex carbazole-based structures. Commonly applied in the preparation of optoelectronic materials, such as organic light-emitting diodes (OLEDs), due to the electron-transporting and luminescent properties of carbazole derivatives. Also explored in the synthesis of bioactive compounds and photoinitiators for polymer chemistry.