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908143-20-4

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908143-20-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 908143-20-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,0,8,1,4 and 3 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 908143-20:
(8*9)+(7*0)+(6*8)+(5*1)+(4*4)+(3*3)+(2*2)+(1*0)=154
154 % 10 = 4
So 908143-20-4 is a valid CAS Registry Number.

908143-20-4Relevant articles and documents

7-Substituted 8-aza-7-deazapurines and 2,8-diaza-7-deaza-purines: Synthesis of nucleosides and oligonucleotides

Lin, Wenqing,Xu, Kuiying,Seela, Frank

, p. 869 - 873 (2007/10/03)

7-Substituted 8-aza-7-deazaadenosines 1a-e were synthesized by Sonogashira cross coupling from the corresponding 7-iodo nucleoside in 36-79% yields. Starting from 7-bromo (or 7-iodo)-8-aza-7-deazaadenine, 2a,b were obtained by acid-catalyzed glycosylation

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