| Chinese alias:4,4'-(2-Pyridylmethylene)-diphenol ace-tate | 
|  English alias:Dulcolax;4,4'-(2-Pyridylmethylene)-diphenol ace-tate | 
|  CAS NO.:603-50-9 | 
|  Characters:White or white-like crystal powder | 
|  Molecular formula:C22H19NO4 | 
|  Molecular weight:361.39 | 
|  Uses:used to cure astriction. | 
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