(S)-Fmoc-2-Aminooct-7-ynoic acid is primarily used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS). The Fmoc (9-fluorenylmethoxycarbonyl) group serves as a protecting group for the amine functionality, ensuring selective deprotection during the synthesis process. The alkyne group at the 7th position allows for further functionalization via click chemistry, enabling the incorporation of diverse moieties or labeling agents into the peptide chain. This compound is valuable in the development of peptide-based drugs, bioconjugates, and probes for biochemical studies. Its unique structure facilitates the creation of complex peptides with specific modifications, enhancing their application in drug discovery, targeted therapy, and molecular imaging.