(-)-(S)-Cibenzoline (Escibenzoline), a S(+)-enantiomer of Cibenzoline, is an antiarrhythmic agent[1].
References
[1] T Niwa, et al. Stereoselective metabolism of cibenzoline, an antiarrhythmic drug, by human and rat liver microsomes: possible involvement of CYP2D and CYP3A. Drug Metab Dispos. 2000 Sep;28(9):1128-34. PMID:10950860
