Used primarily as a derivatizing agent in organic synthesis, especially in the preparation of sulfonamide compounds. Its high reactivity toward nucleophiles makes it valuable in pharmaceutical research for modifying amines and alcohols. Commonly employed in the development of protease inhibitors and other biologically active molecules due to its ability to enhance lipophilicity and metabolic stability. Also utilized in agrochemical synthesis for building complex molecular frameworks. The bulky, electron-rich aromatic structure contributes to steric shielding, which can influence selectivity in reactions. Frequently applied in peptide chemistry to protect or activate functional groups during stepwise synthesis.