(3-Chloro-5-methylphenyl)boronic acid is primarily used in organic synthesis, particularly in Suzuki-Miyaura cross-coupling reactions. This reaction is widely employed in the pharmaceutical industry for the construction of carbon-carbon bonds, enabling the synthesis of complex molecules, including drug candidates and bioactive compounds. Its boronic acid group acts as a key intermediate, facilitating the coupling with aryl or vinyl halides in the presence of a palladium catalyst. Additionally, it finds applications in material science for the development of organic electronic materials and polymers. Its stability and reactivity make it a valuable building block in the preparation of advanced materials and fine chemicals.