Used extensively in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS) methods. It serves as a building block for introducing arginine residues into peptides. The Fmoc (fluorenylmethyloxycarbonyl) group acts as a protective group for the amino acid, ensuring selective reactions during peptide chain assembly. It is widely applied in the production of peptides for pharmaceutical research, drug development, and biochemical studies. Its stability and compatibility with automated synthesizers make it a preferred choice in peptide chemistry. Additionally, it is utilized in the synthesis of bioactive peptides, hormones, and antibodies, contributing to advancements in therapeutic and diagnostic applications.