Cibenzoline and its Impurities

Cibenzoline used for the treatment or prevention of cardiac arrhythmias. They may affect the polarization-repolarization phase of the action potential, its excitability or refractoriness, or impulse conduction or membrane responsiveness within cardiac fibers. Reference standards of Cibenzoline API, and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.