Used in peptide synthesis as a protecting group for arginine, ensuring selective reactions during the formation of peptide bonds. It is particularly valuable in solid-phase peptide synthesis (SPPS), where it helps prevent unwanted side reactions. The Fmoc group can be easily removed under mild basic conditions, while the Z group provides additional protection for the guanidine moiety of arginine. This compound is essential in the production of complex peptides and proteins for research, pharmaceuticals, and biotechnology applications.