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157793-51-6

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157793-51-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 157793-51-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,7,9 and 3 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 157793-51:
(8*1)+(7*5)+(6*7)+(5*7)+(4*9)+(3*3)+(2*5)+(1*1)=176
176 % 10 = 6
So 157793-51-6 is a valid CAS Registry Number.

157793-51-6Relevant articles and documents

NUCLEOSIDE H-PHOSPHONATES: VALUABLE INTERMEDIATES IN THE SYNTHESIS OF DEOXYOLIGONUCLEOTIDES

Froehler, B. C.,Matteucci, M. D.

, p. 469 - 472 (1986)

Nucleoside H-Phosphonates are used directly in the synthesis of H-phosphonate linked deoxyoligonucleotides.A rapid and simplified procedure for the synthesis of deoxyoligonucleotides is described.

Nucleoside H-phosphonates. XXI. Synthetic and 31P NMR studies on the preparation of dinucleoside H-phosphonoselenoates

Kullberg, Martin,Bollmark, Martin,Stawinski, Jacek

, p. 820 - 831 (2008/02/02)

Using 31P NMR spectroscopy as a tool, we investigated the condensation of H-phosphonoselenoate monoesters with a hydroxy component in the presence of various coupling agents. On this basis, synthetic protocols that eliminate or significantly su

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