Used as a chiral base in asymmetric synthesis, particularly in deprotonation reactions to generate enolates with high enantioselectivity. Commonly employed in lithiation chemistry, where it forms complexes with organolithium reagents, enhancing stereochemical control in carbon-carbon bond-forming reactions. Also applied in the resolution of racemic mixtures, especially in the separation of alkaloids and other nitrogen-containing compounds. Has been used in the study of ion channels and cardiac electrophysiology due to its activity as a potassium channel blocker, though its use in biological systems is limited by toxicity. Historically used as an oxytocic agent to induce labor, but no longer in clinical use due to safety concerns.