Used as a chiral base in asymmetric synthesis, particularly in enantioselective deprotonation reactions. Commonly employed in the preparation of chiral intermediates for pharmaceuticals. Acts as a ligand in organometallic chemistry to influence stereoselectivity. Also utilized in the resolution of racemic mixtures, especially in the separation of alkaloids. Has been used in cardiac research due to its antiarrhythmic properties, though clinical use is limited. Serves as a diagnostic tool in coordination chemistry for studying metal ion complexation behavior. Additionally, it serves as a probe substrate in pharmacokinetic studies to evaluate CYP2D6 enzyme activity, which is crucial for understanding inter-individual variability in drug metabolism, efficacy, and side effects.