Used primarily in peptide synthesis, this reagent enables the introduction of a glycine residue protected with a fluorenylmethyloxycarbonyl (Fmoc) group. Its high reactivity as an acid chloride allows for efficient coupling under mild conditions, especially in solid-phase peptide synthesis. The Fmoc group provides orthogonal protection, allowing selective deprotection in the presence of other protecting groups using mild base treatment, typically piperidine. This makes it valuable in stepwise synthesis of complex peptides where precise control over amino acid sequence is required. Commonly used in research settings for developing pharmaceuticals, biochemical probes, and synthetic proteins.