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927814-91-3

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927814-91-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 927814-91-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,2,7,8,1 and 4 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 927814-91:
(8*9)+(7*2)+(6*7)+(5*8)+(4*1)+(3*4)+(2*9)+(1*1)=203
203 % 10 = 3
So 927814-91-3 is a valid CAS Registry Number.

927814-91-3Relevant articles and documents

Bifunctional acyclic nucleoside phosphonates. 1. Symmetrical 1,3-bis[(phosphonomethoxy)propan-2-yl] derivatives of purines and pyrimidines

Vrbovska, Silvie,Holy, Antonin,Pohl, Radek,Masojidkova, Milena

, p. 543 - 566 (2007/10/03)

We report here a general method for the synthesis of new symmetrical bis-phosphonates of acyclic nucleosides. 1,3-Bis[(diisopropoxyphosphoryl) methoxy] derivatives of purine and pyrimidine bases were prepared by their reaction with 1,3-bis[(diisopropoxyphosphoryl)-methoxy]propan-2-yl tosylate. Cytosine, uracil and thymine provided regiospecifically N1-isomers. This alkylation regiospecificity applies to several other tosylates of primary and secondary alcohols as well. 6-Chloropurine and 2-amino-6-chloropurine were alkylated in N9 position. Resulting bis-phosphonates were converted to the respective free phosphonic acids and tested for antiviral and cytostatic activity. Despite the fact that no biological activity was found so far, the outcome of this work can serve as a useful tool in synthesis of novel groups of acyclic nucleoside phosphonates (ANPs).

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