Used in peptide synthesis, it serves as a building block for creating custom peptides. The Fmoc group protects the amino acid during the process, ensuring selective reactions. It is particularly useful in solid-phase peptide synthesis (SPPS) for producing peptides with specific sequences. Its application extends to drug development, where it aids in designing peptide-based therapeutics. Additionally, it is employed in biochemical research to study protein interactions and functions. The propyl group enhances hydrophobicity, making it valuable for modifying peptide properties.