Fmoc-Leu-Gly-OH is primarily used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS). It serves as a building block for constructing peptides, where the Fmoc (fluorenylmethyloxycarbonyl) group acts as a protecting group for the amino group during the synthesis process. This compound is especially valuable in the production of custom peptides for research purposes, including studies in biochemistry, molecular biology, and drug development. Its application extends to the creation of peptide libraries for screening potential therapeutic agents. Additionally, Fmoc-Leu-Gly-OH is utilized in the development of peptide-based drugs, vaccines, and diagnostic tools, owing to its role in ensuring precise and efficient peptide chain assembly.