Used primarily in peptide synthesis, this compound serves as a protected form of glutamic acid. The Fmoc group safeguards the amino functionality, while the tert-butyl ester protects the gamma-carboxyl group, allowing selective deprotection during peptide chain assembly. It is particularly valuable in solid-phase peptide synthesis, enabling the controlled addition of glutamic acid residues. The monohydrate form ensures stability and ease of handling. Its application extends to the production of bioactive peptides, pharmaceuticals, and research involving peptide-based therapeutics. The compound's protective groups are compatible with standard Fmoc-based protocols, making it a versatile reagent in organic and medicinal chemistry.