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    | QCC Cat No.: | QK202021 |  
    | Chemical Name: | Ketotifen Impurity 21 |  
    | Synonyms: | 3,4-dihydroxy-4-(10-oxo-9,10-dihydro-4H-benzo[4,5]cyclohepta[1,2-b]thiophen-4-yl)piperidine-2,6-dione |  
    | CAS No.: | NA |  
    | Molecular Formula: | C18H15NO5S |  
    | Molecular Weight: | 357.38 |  
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    | Standard Reference Material For "Ketotifen Impurity 21" Warning:The form of the product salt may be different from the official website,please consult your local agent for details.
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