Used as a key intermediate in the synthesis of pharmaceuticals and agrochemicals, particularly in Suzuki-Miyaura cross-coupling reactions. Its boronic acid group enables efficient carbon-carbon bond formation, making it valuable in constructing biaryl structures found in active drug molecules. The aldehyde and chloro functionalities allow for further selective modifications, supporting multi-step syntheses in medicinal chemistry. Commonly employed in the development of kinase inhibitors and other bioactive compounds.