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197294-81-8

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197294-81-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 197294-81-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,7,2,9 and 4 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 197294-81:
(8*1)+(7*9)+(6*7)+(5*2)+(4*9)+(3*4)+(2*8)+(1*1)=188
188 % 10 = 8
So 197294-81-8 is a valid CAS Registry Number.

197294-81-8Relevant articles and documents

6-Deoxy-allo-nojirimycin in the racemic and D-series, 6-deoxy-D,L-talo-nojirimycin, their 1-deoxyderivatives and 6-deoxy-2-D,L-allosamine via hetero-Diels-Alder cycloadditions

Defoin, Albert,Sarazin, Herve,Streich, Jacques

, p. 13769 - 13782 (1997)

Diels-Alder cycloaddition of hexadienal dimethylacetal 3 to achiral acylnitroso-dienophile 5a gave the racemic cyclodducts 7a-c and, to chiral chloronitroso-dienophile 6, enantiomerically pure D-10a as sole adduct. Simple chemical transformations led to 6

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