N-(tert-Butoxycarbonyl)-D-threonine Methyl Ester is widely used in the synthesis of peptides and proteins. It serves as a protected form of D-threonine, allowing for selective reactions in complex organic syntheses. This compound is particularly valuable in pharmaceutical research, where it aids in the development of peptide-based drugs, ensuring the integrity of the threonine residue during the synthesis process. Additionally, it is utilized in the production of chiral compounds, contributing to the creation of enantiomerically pure substances essential in medicinal chemistry. Its role in protecting functional groups makes it a crucial reagent in multi-step organic transformations.