Carvedilol Impurity 11

3,3-{2,2-[1,2-Phenylenebis(oxy)]bis(ethane-2,1-diyl)}bis(azanediyl)bis(1-(9H-carbazol-4-yloxy)propan-2-ol)|3,3'-(((1,2-phenylenebis(oxy))bis(ethane-2,1-diyl))bis(azanediyl))bis(1-((,3-{2,2-[Phenylenebis(oxy)]bis(ethane-2,1-diyl)}bis(azanediyl)bis(1-()propan-2-ol]|Carvedilol bisalkylpyrocatechol|Carvedilol bisalkylpyrocatechol derivative (USP)|Carvedilol O-Desmethyl O-Alkyl Impurity|Carvedilol O-Desmethyl O-Alkyl Impurity ; 3,3-{2,2-[1,2-Phenylenebis(oxy)]bis(ethane-2,1-diyl)}bis(azanediyl)bis(1-(9H-carbazol-4-yloxy)propan-2-ol) ;