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161144-25-8

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161144-25-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 161144-25-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,1,1,4 and 4 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 161144-25:
(8*1)+(7*6)+(6*1)+(5*1)+(4*4)+(3*4)+(2*2)+(1*5)=98
98 % 10 = 8
So 161144-25-8 is a valid CAS Registry Number.

161144-25-8Relevant articles and documents

An efficient synthesis of α-branched enones

Kummer, David A.,Brenneman, Jehrod B.,Martin, Stephen F.

, p. 1431 - 1433 (2007/10/03)

A new method for preparing α-branched enones from carboxylic acid derivatives is reported. The procedure commenced by the reaction of N,O-dimethylamides with a masked acyl anion equivalent, followed by the addition of (trimethylsilyl-methyl)cerium dichloride to give intermediates that undergo Lewis acid mediated olefination to produce enol ethers that are then hydrolyzed to afford simple α-branched enones in high overall yields.

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