Used primarily in peptide synthesis, it serves as a building block for creating custom peptides. The Fmoc group protects the amino group during the synthesis process, while the Pbf group safeguards the guanidine side chain of arginine. This ensures selective reactions at desired sites, enabling the production of complex peptides with high precision. It is particularly valuable in synthesizing peptides for pharmaceutical research, including drug development and biochemical studies. Its role in solid-phase peptide synthesis (SPPS) makes it essential for producing peptides with specific sequences and functionalities.