6,7,8,9-Tetrahydro Carvedilol;1-[[2-(2-Methoxyphenoxy)ethyl]aMino]-3-[(2,3,4,9-tetrahydro-1H-carbazol-5-yl)oxy]-2-propanol;Carvedilol Related CoMpound F;Carvedilol USP RC F;Carvedilol Impurity 6(Carvedilol USP Related Compound F);1-[2-(2-methoxyphenoxy)ethylamino]-3-(6,7,8,9-tetrahydro-5H-carbazol-4-yloxy)propan-2-ol;Carvedilol Impurity USP-F;Carvedilol USP Related Compound F