Cisatracurium Besylate EP Impurity E Catalogue B458335 M.W 673.81 M.F C35H47NO10S Specifications FAQs Synonyms: (1R,2S)-1-(3,4-dimethoxybenzyl)-2-(3-((5-hydroxypentyl)oxy)-3-oxopropyl)-6,7-dimethoxy-2-methyl-1,2,3,4-tetrahydroisoquinolin-2-ium benzenesulfonate