Used as a chiral resolving agent in organic synthesis, particularly for the separation of enantiomers of carboxylic acids and other acidic compounds. Its ability to form diastereomeric salts with racemic mixtures allows for the selective crystallization and subsequent isolation of individual enantiomers. Commonly employed in the pharmaceutical industry to obtain optically pure intermediates. Also utilized as a chiral auxiliary and in asymmetric synthesis where stereochemical control is critical. Serves as a source of chiral cations in supramolecular chemistry and in the preparation of chiral stationary phases for chromatographic separation.