Carvedilol Impurity 1(Carvedilol EP Impurity A); 1-{{9-{2-Hydroxy-3-{[2-(2-methoxyphenoxy)ethyl]amino}propyl}-9H-carbazol-4-yl}oxy}-3-{[2-(2-methoxyphenoxy)ethyl]amino}-2-propanol; Carvedilol impurity A (PhEur); Carvedilol Related Compound A (USP); 1-[4-[2-hydroxy-3-[2-(2-methoxyphenoxy)ethylamino]propoxy]carbazol-9-yl]-3-[2-(2-methoxyphenoxy)ethylamino]propan-2-ol; USP Carvedilol Related Impurity A; Carvedilol EP Imp A; 9H-Carbazole-9-ethanol, 4-[2-hydroxy-3-[[2-(2-methoxyphenoxy)ethyl]amino]propoxy]-α-[[[2-(2-methoxyphenoxy)ethyl]amino]methyl]-
