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149681-75-4

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149681-75-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 149681-75-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,9,6,8 and 1 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 149681-75:
(8*1)+(7*4)+(6*9)+(5*6)+(4*8)+(3*1)+(2*7)+(1*5)=174
174 % 10 = 4
So 149681-75-4 is a valid CAS Registry Number.

149681-75-4Relevant articles and documents

Azido/Tetrazole Tautomerism in 2-Azidoadenine β -D-Pentofuranonucleoside Derivatives

Lioux, Thierry,Gosselin, Gilles,Mathe, Christophe

, p. 3997 - 4002 (2003)

The β-D-ribofuranoside derivative of 2-azidoadenine and its 2′-deoxy-, 2′,3′-dideoxy- and 2′,3′ -dideoxy-2′,3′-didehydro counterparts have been synthesized. All these compounds were obtained through the preparation of their 2-chloro precursors. These were converted into their 2-hydrazino derivatives, which upon treatment with sodium nitrate in acid medium gave the target nucleosides. The azido/tetrazole tautomerism observed in such nucleoside analogues was studied in detail. The compounds were also tested for their activity against HIV and HBV, but did not show significant antiviral effects. Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003.

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