Synonyms: (1R,2R)-2-(2-Carboxyethyl)-1,2,3,4-tetrahydro-6,7-dimethoxy-2-methyl-1-veratrylisoquinolinium benzenesulfonate, pentamethylene ester;51W89;Nimbex (TN);Cisatracurium besylate [USAN:BAN];benzenesulfonate; 5-[3-[(1R,2R)-1-[(3,4-dimethoxyphenyl)methyl]-6,7-dimethoxy-2-methyl-3,4-dihydro-1H-isoquinolin-2-yl]propanoyloxy]pentyl 3-[(1R,2R)-1-[(3,4-dimethoxyphenyl)methyl]-6,7-dimethoxy-2-methyl-3,4-dihydro-1H-isoquinolin-2-yl]propanoate;Isoquinolinium,2,2'-[1,5-pentanediylbis[oxy(3- oxo-3,1-propanediyl)]]bis[1-[(3,4-dimethoxyphenyl) methyl]-1,2,3,4-tetrahydro-6,7- dimethoxy-2-methyl-,(1R,1'R,2R,2'R)-,dibenzenesulfonate;Nimbex;Atracurium besylate 1R-cis,1R-cis form;Cisatracurium besylate (USAN);Cisatracurium Besilate(96946-42-8);1R-cis,1R′-cis (Cisatracurium Besylate);