Fmoc-N-Hexyl-Gly-OH is widely used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS). It serves as a building block for incorporating N-hexylglycine into peptides. The Fmoc (9-fluorenylmethoxycarbonyl) group acts as a protective group for the amino functionality, ensuring selective reactions during peptide chain elongation. This compound is particularly valuable in the development of peptide-based drugs, biomaterials, and research tools, where the hydrophobic hexyl group can influence peptide stability, solubility, and interaction with biological targets. Its application extends to creating peptide libraries for drug discovery and studying structure-activity relationships in peptide design.