(3-Chloro-4-cyanophenyl)boronic acid is primarily used in organic synthesis, particularly in Suzuki-Miyaura cross-coupling reactions. This reaction is widely employed in the pharmaceutical and agrochemical industries to form carbon-carbon bonds, enabling the synthesis of complex organic molecules. The compound serves as a key intermediate in the production of various bioactive compounds, including potential drug candidates. Its boronic acid group facilitates the coupling with aryl or vinyl halides, making it valuable in the development of new materials and chemicals. Additionally, it is utilized in the preparation of sensors and molecular probes due to its ability to interact with diols and other functional groups, which is useful in biochemical and analytical applications.