Cisatracurium Besylate EP Impurity B Catalogue B458332 CAS 732929-47-4 M.W 529.64 M.F 28H35NO7S Specifications FAQs Synonyms: (R)-1-(3,4-dimethoxybenzyl)-6,7-dimethoxy-2,2-dimethyl-1,2,3,4-tetrahydroisoquinolin-2-ium benzenesulfonate