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201683-56-9

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201683-56-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 201683-56-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,1,6,8 and 3 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 201683-56:
(8*2)+(7*0)+(6*1)+(5*6)+(4*8)+(3*3)+(2*5)+(1*6)=109
109 % 10 = 9
So 201683-56-9 is a valid CAS Registry Number.

201683-56-9Relevant articles and documents

Radical-induced opening of trisubstituted epoxides: Application in the synthesis of C1-C12 segment of epothilones

Chakraborty,Dutta

, p. 101 - 104 (2007/10/03)

Diastereo- and regioselective opening of a trisubstituted epoxy ketone at the more substituted carbon using samarium(II) iodide presents an alternate approach to the C5-C7 aldol moiety with β-hydroxyketo framework in the stereoselective synthesis of C1-C12 segment of epothilones.

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