It is widely used in peptide synthesis as a protecting group for amines. The Fmoc group can be easily removed under mild basic conditions, making it ideal for solid-phase peptide synthesis (SPPS). It is particularly useful in the synthesis of complex peptides and proteins, where selective protection and deprotection of functional groups are required. Additionally, it is employed in the preparation of peptide-based drugs, biomaterials, and research tools. Its stability and compatibility with various coupling reagents make it a valuable building block in organic and medicinal chemistry.