Used as a protecting group reagent in organic synthesis, particularly in peptide and pharmaceutical manufacturing. Its main application lies in shielding amine functionalities during multi-step reactions, ensuring selective reactivity at other sites in the molecule. The tert-butyloxycarbonyl (Boc)-like structure provides stability under various reaction conditions and can be removed under mild acidic conditions, making it valuable in the synthesis of complex bioactive compounds. Commonly employed in the production of active pharmaceutical ingredients (APIs) where controlled deprotection is essential.