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1089690-04-9

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1089690-04-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1089690-04-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,8,9,6,9 and 0 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1089690-04:
(9*1)+(8*0)+(7*8)+(6*9)+(5*6)+(4*9)+(3*0)+(2*0)+(1*4)=189
189 % 10 = 9
So 1089690-04-9 is a valid CAS Registry Number.

1089690-04-9Relevant 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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