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444177-92-8

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444177-92-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 444177-92-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,4,4,1,7 and 7 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 444177-92:
(8*4)+(7*4)+(6*4)+(5*1)+(4*7)+(3*7)+(2*9)+(1*2)=158
158 % 10 = 8
So 444177-92-8 is a valid CAS Registry Number.

444177-92-8Relevant articles and documents

Synthesis of the ABC ring system of azaspiracid. 1. Effect of D ring truncation on bis-spirocyclization

Carter, Rich G.,Bourland, T. Campbell,Graves, David E.

, p. 2177 - 2179 (2007/10/03)

(matrix presented) Synthesis of a spirocyclization precursor with a truncated D ring has been accomplished. Subsequent bis-spirocyclization induced the formation of equal amounts of the natural transoidal 10R,13S bis-spirocycle and its cisoidal 10R,13S ep

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