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223906-34-1

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223906-34-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 223906-34-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,3,9,0 and 6 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 223906-34:
(8*2)+(7*2)+(6*3)+(5*9)+(4*0)+(3*6)+(2*3)+(1*4)=121
121 % 10 = 1
So 223906-34-1 is a valid CAS Registry Number.

223906-34-1Relevant articles and documents

Asymmetric alkylations using SuperQuat auxiliaries - An investigation into the synthesis and stability of enolates derived from 5,5-disubstituted oxazolidin-2-ones

Bull, Steven D.,Davies, Stephen G.,Jones, Simon,Sanganee, Hitesh J.

, p. 387 - 398 (2007/10/03)

Studies on the alkylation of enolates derived from a range of N-acyl-5,5-dimethyloxazolidin-2-ones and N-acyl-5,5-diphenyloxazolidin-2-ones reveal that high yields and high diastereoselectivities are best obtained when homochiral 4-isopropyl-5,5-dimethyloxazolidin-2-one is employed as a chiral auxiliary.

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