Used as an intermediate in peptide synthesis, particularly in the preparation of complex pharmaceutical compounds where selective protection of functional groups is required. The tert-butoxycarbonyl (Boc) group provides stability during synthesis and can be removed under mild acidic conditions, making it ideal for stepwise assembly of peptides. The acetyl protection on the hydroxyl group prevents unwanted side reactions during coupling steps. Commonly applied in the production of bioactive peptides and investigational drugs requiring precise stereochemical control.