Used in chiral resolution processes, particularly for the separation of enantiomers in pharmaceutical intermediates. It acts as a resolving agent due to its ability to form diastereomeric salts with racemic mixtures of basic compounds, enabling the isolation of single enantiomers. Commonly applied in the production of optically active drugs, such as certain beta-blockers and antidepressants. Also employed in asymmetric synthesis and crystallization techniques where stereochemical purity is critical. Its effectiveness in enantioselective precipitation makes it valuable in fine chemical and pharmaceutical manufacturing.