letrozole & intermediates

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letrozole & intermediates
Posting date : Oct 28, 2009
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CHEMICAL | Pharmaceut
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30-
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CAS NO:112809-51-5 chemical name:4,4'-(1h-1,2,4-triazol-1-ylmethylene)bis-Benzonitrile chemical formula:C17H11N5 Appearance White or off-white crystalline powder Assay ≥ 99.0% Related Substance ≤ 0.3% Single Impurty ≤ 0.1% Loss On Drying ≤ 0.5% Intermediate of Letrozole [Chemical Name]: 4-[1-(1, 2, 4-triazolyl)-methyl]-benzonitrile [CAS No. ]: 112809-25-3 [Chemical Name]: 4, 4'-Dicyanobenzophenone(intermediate of letrozole ) [CAS No. ]: 32445-66-5 [Chemical Name]: 4-[α -(4-cyanophenyl)-hydroxymethyl]-benzonitrile [CAS No. ]: 134521-16-7 [Chemical Name]: 4-[α -(4-cyanophenyl)-chloromethyl]-benzonitrile [CAS No. ]: 112809-57-1
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