Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors for cancer treatment. Its boronic acid functionality enables participation in Suzuki-Miyaura cross-coupling reactions, making it valuable in constructing biaryl structures commonly found in bioactive molecules. Also employed in the preparation of proteasome inhibitors due to the ability of boronic acids to reversibly bind serine residues in enzyme active sites. Widely applied in medicinal chemistry for lead optimization and in the creation of targeted therapies for oncology and inflammatory diseases.