Used in peptide synthesis as a building block, particularly for introducing the 1-aminocyclohexane-1-carboxylic acid (Ac6c) residue into peptides. It is valuable in the development of peptide-based drugs and research compounds due to its ability to modify peptide conformation and stability. The Fmoc group provides protection during synthesis, allowing for precise control over the peptide assembly process. Commonly employed in solid-phase peptide synthesis (SPPS) for creating peptides with enhanced structural properties or therapeutic potential.