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71397-61-0

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71397-61-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 71397-61-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,3,9 and 7 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 71397-61:
(7*7)+(6*1)+(5*3)+(4*9)+(3*7)+(2*6)+(1*1)=140
140 % 10 = 0
So 71397-61-0 is a valid CAS Registry Number.

71397-61-0Relevant articles and documents

Syntheses and Structure Assignments of Six Azolinone Ribonucleosides

Haines, David R.,Leonard, Nelson J.,Wiemer, David F.

, p. 474 - 482 (2007/10/02)

N-Ribosidation of a series of azolinones was achieved via silylation and SnCl4 catalysis.N-Ribosidation of 4-imidazolin-2-one gave 1-β-D-ribofuranosyl-4-imidazolin-2-one; of 1,2,4-triazolin-3-one gave 2- and 4-β-D-ribofuranosyl-1,2,4-triazolin-3-one, and 2,4-di-β-D-ribofuranosyl-1,2,4-triazolin-3-one; and of 2-tetrazolin-5-one gave 1-β-D-ribofuranosyl-2-tetrazolin-5-one and 1,4-di-β-D-ribofuranosyl-2-tetrazolin-5-one.Structure assignments were based on NMR and mass spectra, microanalytical data, and interconversions.The triazolinone monoriboside isomer structures were differentiated by 13C NMR long-range coupling patterns, and the assignments were confirmed by X-ray crystallography.New syntheses were developed for several of the ribonucleosides by fashioning the azolinone rings from 2,3,5-tri-O-benzoylribofuranosyl isocyanate.

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