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201666-93-5

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201666-93-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 201666-93-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,1,6,6 and 6 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 201666-93:
(8*2)+(7*0)+(6*1)+(5*6)+(4*6)+(3*6)+(2*9)+(1*3)=115
115 % 10 = 5
So 201666-93-5 is a valid CAS Registry Number.

201666-93-5Relevant articles and documents

Total synthesis of (+)-azinothricin and (+)-kettapeptin

Hale, Karl J.,Manaviazar, Soraya,George, Jonathan H.,Walters, Marcus A.,Dalby, Stephen M.

supporting information; experimental part, p. 733 - 736 (2009/09/30)

(Chemical Equation Presented) Asymmetric total syntheses of (+)-azinothricin and (+)-kettapeptin have been completed through a common new pathway that exploits a highly chemoselective coupling reaction between the fully elaborated cyclodepsipeptide 5 and the glycal activated esters 3 and 4 at the final stages of both respective syntheses.

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