This chemical is primarily used in peptide synthesis, where it serves as a protected amino acid derivative. The Fmoc group acts as a protecting group for the amine functionality, allowing selective deprotection during the synthesis process. It is particularly useful in solid-phase peptide synthesis (SPPS), enabling the stepwise construction of peptides with high precision. The phenylethyl moiety can influence the peptide's properties, such as hydrophobicity or binding affinity, making it valuable in designing peptides for pharmaceutical research, drug development, and biochemical studies. Its application is crucial in producing peptides with specific sequences and functionalities for therapeutic and diagnostic purposes.