Used in Suzuki-Miyaura cross-coupling reactions as a stable and protected form of 4-hydroxyphenylboronic acid. The MIDA ester group enhances shelf stability and prevents protodeboronation, making it ideal for iterative synthesis and automated chemistry. Commonly applied in pharmaceutical and agrochemical research for constructing biaryl structures with high functional group tolerance. Also useful in solid-phase synthesis and sequential coupling protocols due to its slow release of the active boronic acid under mild aqueous conditions.