Cisatracurium Besylate EP Impurity Q

Chemical Name: (1R,2R)-1-[(3,4-Dimethoxyphenyl)methyl]-2-[3-[[5-[[3-[(1R)-1-[(3,4-dimethoxyphenyl)methyl]-6,7-dimethoxy-3,4-dihydroisoquinolin-2(1H)-yl]propanoyl]oxy]pentyl]oxy]-3-oxopropyl]-6,7-dimethoxy-2-methyl-1,2,3,4-tetrahydroisoquinolinium benzenesulfonate (as per EP); (1R,1′R,2R)-2-Methyl-2,2′-(3,11-dioxo-4,10-dioxatridecamethylene)bis(1,2,3,4-tetrahydro-6,7-dimethoxy-1-veratrylisoquinolinium) benzenesulfonate (as per USP)