Atracurium Besylate; 2,2'-((pentane-1,5-diylbis(oxy))bis(3-oxopropane-3,1-diyl))bis(1-(3,4-dimethoxybenzyl)-6,7-dimethoxy-2-methyl-1,2,3,4-tetrahydroisoquinolin-2-ium) benzenesulfonate; CAS No.: 64228-81-5; 2,2'-((pentane-1,5-diylbis(oxy))bis(3-oxopropane-3,1-diyl))bis(1-(3,4-dimethoxybenzyl)-6,7-dimethoxy-2-methyl-1,2,3,4-tetrahydroisoquinolin-2-ium) benzenesulfonate (CAS 64228-81-5) underscores ChemShuttle s custom synthesis services for bis-quaternary ammonium salts. This dimeric isoquinolinium (CAS 64228-81-5) is synthesized via custom synthesis services for neuromuscular blocker research. As a CRO chemical synthesis provider, ChemShuttle ensures CAS 64228-81-5 s ion channel activity validation.