Used as a key intermediate in the synthesis of biologically active compounds, particularly in pharmaceuticals. It plays an important role in Suzuki-Miyaura cross-coupling reactions, where the boronic acid group enables the formation of carbon-carbon bonds. The chloro substituent at the 5-position provides additional opportunities for selective functionalization and structural diversity. This makes it valuable in drug development for creating complex aromatic structures. Commonly found in the production of kinase inhibitors and other therapeutic agents targeting cancer and inflammatory diseases. Its carboxylic acid functionality allows for further derivatization, enhancing its utility in medicinal chemistry and combinatorial synthesis.