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221134-15-2

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221134-15-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 221134-15-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,1,3 and 4 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 221134-15:
(8*2)+(7*2)+(6*1)+(5*1)+(4*3)+(3*4)+(2*1)+(1*5)=72
72 % 10 = 2
So 221134-15-2 is a valid CAS Registry Number.

221134-15-2Relevant articles and documents

Stereoselective synthesis of enantiomerically pure isoxazolidine-fused δ-lactams

Chiacchio, Ugo,Corsaro, Antonino,Piperno, Anna,Rescifina, Antonio,Romeo, Giovanni,Romeo, Roberto

, p. 37 - 49 (2007/10/03)

Enantiomerically pure isoxazolidine-fused δ-lactams have been obtained by intramolecular nitrone cycloaddition starting from homochiral amido aldehydes. The stereocenter of the homochiral precursor controls the stereochemical course of the process.

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