N-FMOC-cadaverine is widely used in peptide synthesis as a protecting group for the amino group of cadaverine. This protection is crucial during the stepwise assembly of peptides, ensuring that specific reactions occur only at desired sites without interference. It is particularly valuable in solid-phase peptide synthesis (SPPS), where it helps in the controlled addition of amino acids to build complex peptide chains. Additionally, N-FMOC-cadaverine is employed in the preparation of modified peptides and bioconjugates, where its FMOC group can be selectively removed under mild conditions, allowing for further functionalization. Its application extends to the development of peptide-based drugs, biomaterials, and research tools in biochemistry and molecular biology.