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1166839-38-8

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1166839-38-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1166839-38-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,6,6,8,3 and 9 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1166839-38:
(9*1)+(8*1)+(7*6)+(6*6)+(5*8)+(4*3)+(3*9)+(2*3)+(1*8)=188
188 % 10 = 8
So 1166839-38-8 is a valid CAS Registry Number.

1166839-38-8Relevant articles and documents

Copper-mediated synthesis of substituted 2-aryl-N-benzylbenzimidazoles and 2-arylbenzoxazoles via C-H functionalization/C-N/C-O bond formation

Guru, Murali Mohan,Ali, Md Ashif,Punniyamurthy, Tharmalingam

, p. 5295 - 5308 (2011/08/05)

An efficient method for the transformation of N-benzyl bisarylhydrazones and bisaryloxime ethers to functionalized 2-aryl-N-benzylbenzimidazoles and 2-arylbenzoxazoles is described. The protocol involves a copper(II)-mediated cascade C-H functionalization/C-N/C-O bond formation under neutral conditions. Substrates having either electron-donating or -withdrawing substituents undergo the cyclization to afford the target heterocycles at moderate temperature.

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