Carvedilol Bisalkylpyrocatechol Impurity (Carvedilol Dimer Impurity)
Carvedilol IMP 1-((9H-carbazol-3-yl)oxy)-3-((2-(2-(2-((3-((9H-carbazol-4-yl)oxy)-2-hydroxypropyl)amino)ethoxy)phenoxy)ethyl)amino)propan-2-ol