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29334-31-4

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29334-31-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 29334-31-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,9,3,3 and 4 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 29334-31:
(7*2)+(6*9)+(5*3)+(4*3)+(3*4)+(2*3)+(1*1)=114
114 % 10 = 4
So 29334-31-4 is a valid CAS Registry Number.

29334-31-4Relevant articles and documents

Catalytic asymmetric torgov cyclization: A concise total synthesis of (+)-estrone

Prevost, Sebastien,Dupre, Nathalie,Leutzsch, Markus,Wang, Qinggang,Wakchaure, Vijay,List, Benjamin

, p. 8770 - 8773 (2014/08/18)

An asymmetric Torgov cyclization, catalyzed by a novel, highly Bronsted acidic dinitro-substituted disulfonimide, is described. The reaction delivers the Torgov diene and various analogues with excellent yields and enantioselectivity. This method was applied in a very short synthesis of (+)-estrone.

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