Disopyramide is a class Ia antiarrhythmic that blocks fast sodium channels and exerts additional anticholinergic and negative inotropic effects, used for prevention of recurrent ventricular and atrial arrhythmias. Simson Pharma's Disopyramide reference standard and impurities support compendial and stability-indicating testing for this cardiovascular agent.

Simson Pharma Global Ltd. (UK) and Simson Pharma Global LLC (USA) supply high-quality Disopyramide Reference Standards, pharmacopoeial reference materials, and its related impurities to pharmaceutical manufacturers, CROs, analytical laboratories, universities, and regulatory organizations worldwide. To service the Europe and America market efficiently, Simson Pharma Limited has set up Simson Pharma Global Ltd. in United Kingdom and Simson Pharma Global LLC in USA respectively.