Used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS) for the protection of amino acids. The FMOC group provides temporary protection for the amino group, allowing selective deprotection during the synthesis process. It is especially useful for synthesizing complex peptides and proteins, ensuring high purity and yield. Commonly applied in pharmaceutical research, biotechnology, and the development of therapeutic peptides. Its stability and ease of removal make it a preferred choice in modern peptide chemistry.