Used extensively in peptide synthesis as a protected form of lysine. The Boc (tert-butyloxycarbonyl) group safeguards the amino group during the synthesis process, preventing unwanted reactions. This compound is particularly valuable in solid-phase peptide synthesis (SPPS), where it allows for the stepwise construction of peptides with high precision. After the peptide chain is assembled, the Boc group can be selectively removed under acidic conditions, revealing the free amino group for further reactions. It is also employed in the preparation of modified peptides and peptidomimetics, which are crucial in drug discovery and development. Additionally, it serves as a building block in the synthesis of complex biomolecules, aiding in the study of protein structure and function.