Used as a key intermediate in the synthesis of fluorescent dyes and sensors, particularly for detecting biologically relevant species such as nitric oxide and reactive oxygen species. Its electron-deficient aromatic structure makes it suitable for constructing conjugated organic materials used in optoelectronic devices, including organic light-emitting diodes (OLEDs) and field-effect transistors (OFETs). Commonly employed in palladium-catalyzed cross-coupling reactions to introduce the benzo[c][1,2,5]oxadiazole (benzofurazan) moiety into larger π-systems, enhancing photostability and tuning emission properties. Also explored in the development of fluorescent labels for biomolecules due to its strong signal output and moderate Stokes shift.