3-Chloro-4-methylphenylboronic acid is widely used in organic synthesis, particularly in Suzuki-Miyaura cross-coupling reactions. This reaction is essential for forming carbon-carbon bonds, making it valuable in the production of pharmaceuticals, agrochemicals, and advanced materials. The compound serves as a key intermediate in the synthesis of complex organic molecules, including bioactive compounds and polymers. Its boronic acid group enables efficient coupling with aryl halides, facilitating the creation of diverse aromatic structures. Additionally, it is employed in the development of sensors and catalysts due to its ability to interact with various organic and inorganic substrates.