Biphenyl-2-boronic acid is an organoboron compound featuring a boronic acid functional group attached to the 2-position of a biphenyl scaffold. This structural motif makes it a versatile building block in organic synthesis, particularly in Suzuki-Miyaura cross-coupling reactions, which are pivotal for constructing biaryl and extended π-conjugated systems. Its primary industrial and research significance lies in materials science, especially in the development of organic electronic devices. The biphenyl moiety, when functionalized, serves as a core unit in the synthesis of advanced organic semiconductors, host materials, and charge-transporting layers. This compound is a key precursor in the manufacture of materials for organic light-emitting diodes (OLEDs), where it contributes to the formation of efficient and stable emissive or charge-transport layers. While primarily a synthetic intermediate, its well-defined reactivity and commercial availability also position it as a standard reagent in method development and library synthesis for pharmaceutical and agrochemical research, where biaryl structures are common. Proper handling is required as boronic acids can be irritants and should be stored under inert conditions to prevent protodeboronation.