Peptide and Protein Synthesis: Thr-OtBu·HCl serves as an important precursor in the synthesis of peptides and proteins. The tert-butyl ester protecting group stabilizes the structure of threonine, ensuring its integrity during complex chemical reactions and effectively promoting the elongation of peptide chains and protein synthesis. Drug Design and Development: Due to its unique chemical structure and biological activity, Thr-OtBu·HCl has potential applications in new drug design. By modifying and optimizing its structure, new drugs with specific pharmacological effects can be developed, offering new options for disease treatment. Biological Activity Research: Thr-OtBu·HCl also plays a significant role in biological activity research. Scientists can utilize it to investigate protein structures, functions, and interactions with other molecules, providing deeper insights into biological processes. As a Protecting Group: In organic synthesis, the tert-butyl ester group is often used as a protecting group to temporarily mask the reactivity of certain functional groups, enabling precise control during complex synthetic processes. Therefore, Thr-OtBu·HCl can serve as an intermediate in the synthesis of other complex compounds. | 
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