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                Chemical name: 4’-[4-methyl-6-(1-methyl-1H-benzimidazol-2-yl)-2-propyl-1H-benzimidazol-1ylmithyl]-2-carboxylic acid 
  
CAS No. : 144701-48-4 
Molecular formula:  C33H30N4O2 
Molecular weight: 514. 62 
Specification: EP, USP, JP CP etc. 
Character White or off-white crystalline powder;odourless bitterness 
 Identification: Positive reaction 
The clarification and color of sparse sulphuric acid solution:Comply with 
Sulphate: ≦0.05% 
Chloride: ≦0.01% 
Related substance≦1.0% 
Dichlormethane: ≦0.06%  
Chloroform: ≦0.006%  
Methanol: ≦0.01% 
Residue on ignition: ≦0.1% 
Ultimate analysis: C 77. 02%,H 5. 88%,N 10. 89%,O 6. 22% 
               
               
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