Used primarily in peptide synthesis, this compound serves as a protective agent for amino acids during the formation of peptide bonds. Its role is crucial in solid-phase peptide synthesis (SPPS), where it helps in the sequential addition of amino acids to build peptides. The Fmoc group provides temporary protection, which can be removed under mild basic conditions, allowing for precise control over the synthesis process. Additionally, the benzyl group attached to the penicillamine moiety offers further protection against unwanted side reactions, ensuring the integrity of the peptide chain. This chemical is particularly valuable in the production of complex peptides used in pharmaceuticals, research, and biotechnology applications.