This chemical is primarily used in peptide synthesis as a protected amino acid derivative. The fluorenylmethoxycarbonyl (Fmoc) group serves as a protecting group for the amino functionality, ensuring selective reactions during peptide chain assembly. Its application is crucial in solid-phase peptide synthesis (SPPS), where it allows for the stepwise construction of peptides with high precision. The presence of the 4-methylpent-4-enoic acid moiety provides a unique structural feature, enabling the incorporation of specific functionalities into the peptide sequence. This compound is particularly valuable in the development of biologically active peptides, pharmaceuticals, and research tools for studying protein interactions.