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138197-76-9

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138197-76-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 138197-76-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,1,9 and 7 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 138197-76:
(8*1)+(7*3)+(6*8)+(5*1)+(4*9)+(3*7)+(2*7)+(1*6)=159
159 % 10 = 9
So 138197-76-9 is a valid CAS Registry Number.

138197-76-9Downstream Products

138197-76-9Relevant articles and documents

Bis-trimethylsilylacetamide: A reagent for the control of Friedel-Crafts alkylation reactions using methyl chloromethoxyacetate

Earle, Martyn J.,Fairhurst, Robin A.,Heaney, Harry

, p. 6171 - 6174 (2007/10/02)

The Friedel-Crafts alkylation reactions of electron rich aromatic compounds using methyl α-chloro-α-methoxyacetate and Lewis acids leads predominantly to the formation of diarylacetic acid derivatives in which the second stage of the sequence is favoured by the presence of hydrogen chloride generated in the first step; effective control can be achieved in a number of cases by the addition of bis-trimethylsilylacetamide.

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