Used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS), where it serves as a building block for constructing peptides. The Fmoc group provides protection for the amino group during the synthesis process, ensuring selective reactions at other sites. It is especially valuable in the synthesis of complex peptides and proteins, where precise control over amino acid sequence is critical. Commonly applied in pharmaceutical research, drug development, and biochemical studies to create peptides with specific biological activities or structural properties. Its stability and compatibility with SPPS protocols make it a reliable choice for producing high-purity peptides.