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155956-27-7

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155956-27-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 155956-27-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,5,9,5 and 6 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 155956-27:
(8*1)+(7*5)+(6*5)+(5*9)+(4*5)+(3*6)+(2*2)+(1*7)=167
167 % 10 = 7
So 155956-27-7 is a valid CAS Registry Number.

155956-27-7Relevant articles and documents

Synthesis and utility of the 3,3-dimethyl-5-substituted-2-pyrrolidinone 'Quat' chiral auxiliary

Davies, Stephen G.,Dixon, Darren J.,Doisneau, Gilles J.-M.,Prodger, Jeremy C.,Sanganee, Hitesh J.

, p. 647 - 658 (2007/10/03)

The synthesis and utility of the 3,3-dimethyl-5-substituted-2-pyrrolidinone 'Quat' chiral auxiliary in stereoselective enolate reactions of attached N-acyl side chains combined with the mild and non-racemising conditions required for the ultimate removal of the chiral side chain is described.

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