Used in peptide synthesis as a protecting group for tryptophan. The Fmoc group ensures selective deprotection during solid-phase peptide synthesis, while the OPfp ester enhances reactivity in coupling reactions. This compound is particularly valuable in synthesizing complex peptides and proteins, especially in pharmaceutical research and development. Its application extends to the production of bioactive peptides, where precise control over amino acid incorporation is critical. Additionally, it is employed in the synthesis of peptide-based drugs and therapeutic agents, contributing to advancements in medicine and biotechnology.