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923931-57-1

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923931-57-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 923931-57-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,2,3,9,3 and 1 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 923931-57:
(8*9)+(7*2)+(6*3)+(5*9)+(4*3)+(3*1)+(2*5)+(1*7)=181
181 % 10 = 1
So 923931-57-1 is a valid CAS Registry Number.

923931-57-1Relevant articles and documents

Alkylation of arenes with benzylic and propargylic alcohols - Classical versus fancy catalysts

Liu, Jianhui,Muth, Enrico,Floerke, Ulrich,Henkel, Gerald,Merz, Klaus,Sauvageau, Janelle,Schwake, Erik,Dyker, Gerald

, p. 456 - 462 (2006)

Gold chloride and BF3 · etherate were tested as Friedel-Crafts catalysts in the propargylation of electron-rich arenes: differences in reactivity of the catalysts can be used to achieve high selectivity either for monoalkylation or for multiple

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