Used as a reagent in organic synthesis, particularly for introducing the tert-butoxycarbonyl (Boc) protecting group to amines. This protection is essential in peptide synthesis, where it prevents unwanted reactions at the amine group during coupling steps. It is favored for its stability under a variety of reaction conditions and ease of removal under mild acidic conditions, allowing selective deprotection without affecting other functional groups. Also employed in the preparation of carbamates and other protected intermediates in pharmaceutical and agrochemical manufacturing.