DL-Serine methyl ester hydrochloride is widely used in biochemical research as a building block for peptide synthesis. It serves as a precursor in the preparation of various serine-containing peptides and proteins, which are essential for studying biological processes. This compound is also utilized in the development of pharmaceutical agents, particularly in the synthesis of drugs targeting neurological disorders. Additionally, it plays a role in enzymatic studies, helping to understand the function and mechanism of serine proteases. Its application extends to the production of chiral compounds, where it aids in the creation of enantiomerically pure substances for use in asymmetric synthesis.