Used as a key intermediate in the synthesis of pharmaceutical agents, particularly in the development of proteasome inhibitors for cancer therapy. Its boronic acid functional group enables reversible binding to enzyme active sites, enhancing selectivity and potency. Commonly employed in targeted protein degradation research and in the preparation of boron-containing drugs that exhibit improved pharmacokinetic profiles. Also utilized in Suzuki-Miyaura cross-coupling reactions for constructing complex bioactive molecules.