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664326-40-3

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664326-40-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 664326-40-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,4,3,2 and 6 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 664326-40:
(8*6)+(7*6)+(6*4)+(5*3)+(4*2)+(3*6)+(2*4)+(1*0)=163
163 % 10 = 3
So 664326-40-3 is a valid CAS Registry Number.

664326-40-3Relevant articles and documents

The reactions of copper-dibromodifluoromethane-amide systems with alcohols

Clark, James H.,McClinton, Martin A.,Blade, Robert J.

, p. 257 - 267 (1992)

1,1,1-Trifluoro-2-arylethanes can be prepared by the trifluoromethyldehydroxylation of benzyl alcohols using the copper-dibromodifluoromethane-amide reaction system, although the yields are low.The mechanism of the reaction may involve chelation of the substrate to copper so that α-substituted benzyl alcohols and other alcohols are unreactive.

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