Carvedilol EP Impurity B with CAS No: 918903-20-5 is an impurity standard of Carvedilol. Carvedilol is a medication belonging to the beta-blocker class. Carvedilol is used to treat high blood pressure and heart failure by reducing heart rate and blood pressure. Carvedilol is blocks certain receptors in the heart and blood vessels. Buy high quality Carvedilol EP Impurity B from Molsyns Research. Molsyns Research is one of the leading manufacturer and exporter of Carvedilol EP Impurity B