0 Atracurium Besilate CAS 64228-81-5 In APIs, Pharmaceutical Chemicals, Products 64228-81-5,Atracurium Besilate,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-isoquinolinium dibenzenesulfonate