This compound, 2-[cyclohexyl([(9H-fluoren-9-yl)methoxy]carbonyl)amino]acetic acid, is an Fmoc-protected derivative of N-cyclohexylglycine, a non-natural amino acid building block used in solid-phase peptide synthesis. The fluorenylmethoxycarbonyl (Fmoc) group selectively protects the amino functionality, allowing controlled incorporation of the N-cyclohexylglycine residue into peptide chains. It offers stability under basic conditions and is deprotected using piperidine. This reagent is essential for synthesizing complex peptides and proteins in pharmaceutical research, drug development, and biotechnology applications, enabling the study of modified protein structures and bioactive molecules.