Fmoc-Octyl-Gly-OH is primarily used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS). It serves as a building block for introducing hydrophobic segments into peptide chains, which can influence the peptide's stability, solubility, and interaction with biological membranes. Its Fmoc (fluorenylmethyloxycarbonyl) protecting group allows for selective deprotection during synthesis, ensuring precise control over the peptide assembly process. This compound is also valuable in creating peptide-based biomaterials, drug delivery systems, and surface modification agents, where the octyl chain enhances lipophilicity and membrane permeability. Additionally, it finds applications in research focused on studying peptide-lipid interactions and designing peptides with tailored biophysical properties.