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181709-01-3

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181709-01-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 181709-01-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,1,7,0 and 9 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 181709-01:
(8*1)+(7*8)+(6*1)+(5*7)+(4*0)+(3*9)+(2*0)+(1*1)=133
133 % 10 = 3
So 181709-01-3 is a valid CAS Registry Number.

181709-01-3Relevant articles and documents

A new route to γ-arylidenebutyrolactones via a tandem carbopalladation-heterocyclisation sequence: A formal synthesis of U-68,215

Cavicchioli, Marcello,Decortiat, Sylvie,Bouyssi, Didier,Gore, Jacques,Balme, Genevieve

, p. 11463 - 11478 (2007/10/03)

Benzo-annulated enol lactones are obtained in good yields from pentynoic acids 3- or 5-substituted with an iodo-aryl moiety by palladium-catalyzed cyclization of their potassium carboxylates. Using this approach, an efficient new route to U-68,215 is described.

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