2-Methylpyridine-3-boronic acid is an organoboron compound featuring a boronic acid functional group attached to the 3-position of a 2-methylpyridine (2-picoline) ring. This structure classifies it as a heteroarylboronic acid, a valuable class of reagents in synthetic chemistry. Its primary application is as a versatile building block in cross-coupling reactions, most notably the Suzuki-Miyaura reaction. The boronic acid group enables efficient carbon-carbon bond formation with various aryl or heteroaryl halides under palladium catalysis. The presence of the pyridine ring and the methyl substituent makes it a useful precursor for constructing more complex molecules containing substituted pyridine motifs. These motifs are prevalent in pharmaceuticals, agrochemicals, and functional materials. Consequently, this compound is frequently employed in medicinal chemistry research for the synthesis of drug candidates and intermediates. As a solid, it requires storage under inert conditions to prevent protodeboronation or oxidation. It is a standard reagent offered by numerous fine chemical and building block suppliers for research and development purposes.