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209157-61-9

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209157-61-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 209157-61-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,9,1,5 and 7 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 209157-61:
(8*2)+(7*0)+(6*9)+(5*1)+(4*5)+(3*7)+(2*6)+(1*1)=129
129 % 10 = 9
So 209157-61-9 is a valid CAS Registry Number.

209157-61-9Relevant articles and documents

Synthesis and application in asymmetric synthesis of azacrown ethers derived from D-glucose

Bako, Peter,Vizvardi, Kristof,Bajor, Zoltan,Toke, Laszlo

, p. 1193 - 1194 (1998)

New chiral monoaza-15-crown-5 derivatives and lariat ethers anellated to phenyl β-D-glucoside have been synthesized which show significant asymmetric induction as phase transfer catalysts in the Michael addition of 2-nitropropane to chalcone (84% ee) and

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