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921767-33-1

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921767-33-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 921767-33-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,2,1,7,6 and 7 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 921767-33:
(8*9)+(7*2)+(6*1)+(5*7)+(4*6)+(3*7)+(2*3)+(1*3)=181
181 % 10 = 1
So 921767-33-1 is a valid CAS Registry Number.

921767-33-1Downstream Products

921767-33-1Relevant academic research and scientific papers

Asymmetric Mannich reaction of dicarbonyl compounds with α-amido sulfones catalyzed by cinchona alkaloids and synthesis of chiral dihydropyrimidones

Lou, Sha,Dai, Peng,Schaus, Scott E.

, p. 9998 - 10008 (2008/04/05)

(Chemical Equation Presented) The highly enantioselective cinchona alkaloid-catalyzed Mannich reaction of dicarbonyl compounds with α-amido sulfones as acyl imine precursors is described. The reaction requires 10 mol % of the cinchona alkaloid catalyst, w

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