259137-53-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 259137-53-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,9,1,3 and 7 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 259137-53:
(8*2)+(7*5)+(6*9)+(5*1)+(4*3)+(3*7)+(2*5)+(1*3)=156
156 % 10 = 6
So 259137-53-6 is a valid CAS Registry Number.
259137-53-6Relevant articles and documents
A new general synthesis of isomeric nucleosides
Bera, Sanjib,Nair, Vasu
, p. 5813 - 5815 (2001)
An efficient new method for the synthesis of isonucleosides is described. The key step in the synthesis was the direct coupling of purine and pyrimidine bases with the cyclic sulfate of a carbohydrate intermediate. This reaction proceeded with high regiospecificity and stereospecificity.
