Used primarily as a key intermediate in pharmaceutical synthesis, especially in Suzuki-Miyaura cross-coupling reactions to construct biaryl compounds. Its boronate ester group enables efficient carbon-carbon bond formation, making it valuable in the development of active pharmaceutical ingredients (APIs). The methylsulfonyl moiety enhances electron-withdrawing properties, improving reaction selectivity and yield in drug discovery processes. Commonly applied in the preparation of kinase inhibitors and other bioactive molecules targeting inflammation, cancer, and central nervous system disorders. Its stability and reactivity profile make it suitable for late-stage functionalization in complex molecule assembly.