(1R,2R)-1-[(3,4-Dimethoxyphenyl)methyl]-6,7-dimethoxy-2-methyl-2-[3-[[5-(prop-2-enoyloxy)pentyl]oxy]-3-oxopropyl]-1,2,3,4-tetrahydroisoquinolinium (as per EP);(1R,2R)-2-(3,11-Dioxo-4,10-dioxa-12-tridecenyl)-(1,2,3,4-tetrahydro-6,7-dimethoxy-2-methyl-1-veratrylisoquinolinium) (as per USP):cis-Monoacrylate Cisatracurium;;;;,Cisatracurium Impurity