Used as a protecting group reagent in organic synthesis, particularly for introducing the tert-butoxycarbonyl (Boc) group to amines. This protection is widely applied in peptide synthesis to prevent unwanted reactions of amino groups during coupling steps. The reagent allows for mild and selective protection, and the Boc group can be easily removed under acidic conditions without affecting other functional groups. Its use in solution form enhances handling and reactivity in common solvents, making it suitable for both laboratory-scale and industrial processes in pharmaceutical and fine chemical manufacturing.