Fmoc-11-Aun-OH is widely used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS) as a building block. Its Fmoc (fluorenylmethyloxycarbonyl) protecting group allows for selective deprotection under mild basic conditions, making it suitable for constructing complex peptides. This compound is especially valuable in the synthesis of peptides with specific functionalizations or modifications, as it provides a controlled and efficient way to introduce amino acids into the peptide chain. Additionally, it is employed in the development of peptide-based drugs, biomaterials, and research tools, where precise peptide sequences are critical for functionality. Its application extends to areas like drug delivery systems, where peptides are designed to target specific cells or tissues, and in bioconjugation techniques for labeling or immobilizing peptides.