1-[benzyl-[2-(2-methoxyphenoxy)ethyl]amino]-3-(9H-carbazol-4-yloxy)propan-2-ol; (2RS)-1-[Benzyl[2-(2-methoxyphenoxy)ethyl]amino]-3-(9Hcarbazol-4-yloxy)propan-2-ol; 1-(9H-Carbazol-4-yloxy)-3-[[2-(2-methoxyphenoxy)ethyl](phenylmethyl)amino]-2-propanol; 1-(9H-Carbazol-4-yloxy)-3-(benzyl(2-(2-methoxyphenoxy)ethyl)amino)propan-2-ol; Carvedilol Related Compound C (USP); N-Benzyl Carvedilol