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207725-74-4

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207725-74-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 207725-74-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,7,7,2 and 5 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 207725-74:
(8*2)+(7*0)+(6*7)+(5*7)+(4*2)+(3*5)+(2*7)+(1*4)=134
134 % 10 = 4
So 207725-74-4 is a valid CAS Registry Number.

207725-74-4Relevant articles and documents

Artemisinin tricyclic analogs: Role of a methyl group at C-5a

Zouhiri, Fatima,Desmaele, Didier,D'Angelo, Jean,Riche, Claude,Gay, Frederick,Ciceron, Liliane

, p. 2969 - 2972 (1998)

New artemisinin tricyclic analogs, bearing a methyl group at C-5a were synthetized through ozonation of vinylsilanes. Presence of such a substituent was detrimental to the antimalarial activity of these trioxanes, thus reinforcing the hypothesis that tight hemin-trioxane complexes are involved in the activation phase of these compounds.

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