Used in peptide synthesis as a protecting group for the amino acid citrulline, ensuring selective reactions during the formation of peptide bonds. It is particularly valuable in solid-phase peptide synthesis (SPPS) to prevent unwanted side reactions. The Boc group can be easily removed under acidic conditions, allowing for the controlled assembly of complex peptides. This compound is essential in the production of peptides for research, pharmaceuticals, and biotechnology applications, where precise sequence control is critical. It also aids in the study of post-translational modifications involving citrulline, such as those relevant in autoimmune diseases.