Used primarily in peptide synthesis, this compound serves as a protected amino acid derivative. It is particularly valuable in solid-phase peptide synthesis (SPPS) due to its Fmoc group, which can be easily removed under basic conditions, allowing for the stepwise construction of peptides. The Pbf (2,2,4,6,7-pentamethyldihydrobenzofuran-5-sulfonyl) group protects the guanidine side chain of arginine, preventing unwanted reactions during synthesis. This protection is crucial for maintaining the integrity of the peptide sequence. Additionally, the N-methylation enhances the stability and can influence the conformational properties of the resulting peptide, making it useful in the development of peptide-based drugs and bioactive molecules. Its application is common in research and pharmaceutical industries for producing peptides with specific biological activities.