Used as a key intermediate in the synthesis of conjugated polymers and organic semiconductors, particularly in the development of thiophene-based materials for organic field-effect transistors (OFETs) and organic photovoltaics (OPVs). Its electron-withdrawing nitrile group and reactive bromine sites allow for selective cross-coupling reactions, enabling precise molecular engineering of π-conjugated systems. Also employed in the preparation of fluorescent dyes and sensors due to its ability to modulate electronic properties in aromatic frameworks.