2-Methoxycarbonyl-3-methylphenylboronic acid is a boronic acid derivative featuring a methoxycarbonyl substituent at the 2-position and a methyl group at the 3-position of the phenyl ring. This compound is a valuable intermediate in organic synthesis, particularly in Suzuki-Miyaura cross-coupling reactions, where it serves as an efficient boron-based coupling partner for constructing biaryl and heteroaryl systems. Its steric and electronic properties enhance selectivity and reactivity in palladium-catalyzed transformations. The presence of the methoxycarbonyl group further allows for subsequent functionalization, making it a versatile building block for pharmaceuticals, agrochemicals, and advanced materials. The compound is typically handled under inert conditions due to its sensitivity to moisture.