Used as a key intermediate in Suzuki-Miyaura cross-coupling reactions for the synthesis of biologically active compounds, particularly in pharmaceutical research. Its boronate ester group enables efficient carbon-carbon bond formation, making it valuable in constructing complex heterocyclic systems. Commonly applied in the development of kinase inhibitors and other drug candidates targeting cancer and inflammatory diseases. The phenylsulfonyl group acts as a protecting moiety and can be removed or modified in later synthetic steps. Its stability and reactivity profile make it suitable for late-stage functionalization in medicinal chemistry campaigns.