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117772-23-3

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117772-23-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 117772-23-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,7,7 and 2 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 117772-23:
(8*1)+(7*1)+(6*7)+(5*7)+(4*7)+(3*2)+(2*2)+(1*3)=133
133 % 10 = 3
So 117772-23-3 is a valid CAS Registry Number.

117772-23-3Downstream Products

117772-23-3Relevant articles and documents

A Novel, Base-induced Fragmentation of Hantzsch-type 4-Aryl-1,4-dihydropyridines

McInally, Thomas,Tinker, Alan C.

, p. 1837 - 1844 (1988)

Hantzsch-type 1,4-dihydropyridine derivatives substituted with highly electron-deficient aryl groups in the 4-position, on treatment with a variety of basic reagents in non-hydroxylic solvents, undergo an unexpected and ready scission of the inter-ring bond to give the corresponding 4-unsubstituted pyridine and an arene derived from the original 4-substituent.The scope of the reaction has been investigated and possible mechanisms are discussed.

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