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1049706-68-4

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1049706-68-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1049706-68-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,4,9,7,0 and 6 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1049706-68:
(9*1)+(8*0)+(7*4)+(6*9)+(5*7)+(4*0)+(3*6)+(2*6)+(1*8)=164
164 % 10 = 4
So 1049706-68-4 is a valid CAS Registry Number.

1049706-68-4Relevant articles and documents

Facile one-pot direct arylation and alkylation of nitropyridine N -oxides with grignard reagents

Zhang, Fang,Duan, Xin-Fang

, p. 6102 - 6105 (2012/01/06)

Facile arylation and alkylation of nitropyridine N-oxides were developed through the reactions of Grignard reagents with nitropyridine N-oxides. For the same 4-nitropyridine N-oxide, arylation occurred at the 2- (or 6-) position, whereas alkylation occurred at the 3-position in an adjustably site-selective manner. The cooperative action of the two groups was discovered in the reactions of 3-nitropyridine N-oxides. This protocol can find wide applications in building various pyridine compounds as illustrated in total syntheses of Emoxipin and Caerulomycin A and E.

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