4-Cyanophenylboronic acid is widely used in organic synthesis, particularly in Suzuki-Miyaura cross-coupling reactions, where it serves as a key intermediate for creating biaryl compounds. These compounds are essential in the development of pharmaceuticals, agrochemicals, and advanced materials. It is also employed in the preparation of sensors and probes for detecting sugars and other diol-containing molecules due to its ability to form stable complexes with them. Additionally, it finds application in the synthesis of metal-organic frameworks (MOFs) and other porous materials, which are used in gas storage, separation, and catalysis. Its versatility makes it a valuable reagent in both academic research and industrial processes.