Product Name: Cisatracurium besylate 

Synonym:(1R,1'R,2R,2'R)-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

CAS No. 96946-42-8

Molecular Formula: C65H82N2O18S2

Molecular Weight: 1243.48

Appearance: White or off-white crystalline powder, odorless, hydroscopic

Assay (HPLC): 95-102%

Acidity: 3.5-5.0

Specific optical rotation: -48°-- -58°

Sulfate: 0.05%max

Related substances:  

Narrow isomer: 0.5%max

      Cis-and trans-isomers: 0.5%max 

      Unknown monomer: 1.5%max

      Total impurity: 5.0%max

Residue on ignition: 0.2%max

Loss on drying: 2.0%max

Heavy metals: <20ppm

Package: 25kg/fibre drum