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81312-33-6

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81312-33-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81312-33-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,3,1 and 2 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 81312-33:
(7*8)+(6*1)+(5*3)+(4*1)+(3*2)+(2*3)+(1*3)=96
96 % 10 = 6
So 81312-33-6 is a valid CAS Registry Number.

81312-33-6Relevant articles and documents

C-DAUNOSAMINYL DERIVATIVES BY THE WITTIG REACTION

Acton, Edward M.,Ryan, Kenneth J.,Smith, Thomas H.

, p. 235 - 246 (2007/10/02)

C-Glycosylation of a 2-deoxypyranose has been achieved for the first time by conversion of 4-O-p-nitrobenzoyl-N-trifluoroacetyldaunosamine in a Wittig reaction into the corresponding derivative of ethyl 2-(daunosaminyl)acetate.The product was predominantly (54percent) in the desired α-L configuration (separated from the β-L anomer, 15percent) required for further elaboration of C-daunosaminyl derivatives.Conversion into the corresponding derivatives of 2-(α-L-daunosaminyl)acetaldehyde and 2-(α-L-daunosaminyl)ethanol was also achieved.

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