N-(Methoxycarbonyl)-L-threonine is primarily used in the field of peptide synthesis. It serves as a protected form of threonine, an amino acid, which is crucial in creating specific peptide sequences. The methoxycarbonyl group acts as a protective group, preventing unwanted reactions at the threonine site during the synthesis process. This chemical is particularly valuable in the production of complex peptides for pharmaceutical research, where precise control over amino acid incorporation is essential. It is also employed in the development of peptide-based drugs, which are used to treat various diseases, including cancer and metabolic disorders. Additionally, it finds application in biochemical studies to understand protein structure and function, aiding in the design of novel therapeutic agents.