Synonyms: 1-[[4-(2-Hydroxy-3-[[2-(methoxyphenoxy)ethyl]amino]propyl]-9H-carbazol-4-yl]oxy]-3-[[2-(2-methoxyphenoxy)ethyl]amino]propan-2-ol; 1-(9H-Carbazol-4-yloxy)-3-[[2-hydroxy-3-[[2-(2-methoxyphenoxy)ethyl]amino]propyl][2-(2-methoxyphenoxy)ethyl]amino]-2-propanol; EP Carvedilol Related Compound A; Carvedilol Impurity A; Carvedilol USP A