(2,3-Dichloro-4-formylphenyl)boronic acid is primarily used in organic synthesis, particularly in Suzuki-Miyaura cross-coupling reactions. This reaction is widely employed in the pharmaceutical industry to create carbon-carbon bonds, enabling the synthesis of complex organic molecules, including drugs and bioactive compounds. The boronic acid group in the compound acts as a key reagent, facilitating the coupling with aryl or vinyl halides in the presence of a palladium catalyst. Additionally, its formyl group can serve as a reactive site for further functionalization, making it a versatile intermediate in the development of fine chemicals and advanced materials. Its application extends to the preparation of sensors and polymers, where its unique structure contributes to the design of functional materials with specific properties.