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725227-55-4

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725227-55-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 725227-55-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,2,5,2,2 and 7 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 725227-55:
(8*7)+(7*2)+(6*5)+(5*2)+(4*2)+(3*7)+(2*5)+(1*5)=154
154 % 10 = 4
So 725227-55-4 is a valid CAS Registry Number.

725227-55-4Relevant articles and documents

Simple and efficient routes for the preparation of isoxazolidinyl nucleosides containing cytosine and 5-methyl-cytosine as new potential anti-HIV drugs

Colacino, Evelina,Converso, Antonella,Liguori, Angelo,Napoli, Anna,Siciliano, Carlo,Sindona, Giovanni

, p. 8551 - 8557 (2001)

A rapid and convenient large-scale strategy for the synthesis of some new isoxazolidinyl nucleosides, as potential antiviral drugs, is reported. In particular, a multistep methodology based either on the 1,3-dipolar cycloaddition approach or on a slight modification of the convertible nucleoside concept was exploited in the preparation of 4′-aza-2′,3′-dideoxynucleoside analogues containing cytosine and 5-methyl-cytosine.

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