Used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS), as a building block for introducing the piperidine moiety into peptide chains. The Fmoc group provides protection for the amino group during synthesis, allowing for selective deprotection and subsequent coupling reactions. It is also employed in the development of peptidomimetics and bioactive compounds, where the piperidine structure plays a role in enhancing pharmacological properties. Additionally, it serves as an intermediate in the synthesis of complex organic molecules for drug discovery and medicinal chemistry research.