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1239945-49-3

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1239945-49-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1239945-49-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,9,9,4 and 5 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1239945-49:
(9*1)+(8*2)+(7*3)+(6*9)+(5*9)+(4*4)+(3*5)+(2*4)+(1*9)=193
193 % 10 = 3
So 1239945-49-3 is a valid CAS Registry Number.

1239945-49-3Upstream product

1239945-49-3Downstream Products

1239945-49-3Relevant academic research and scientific papers

Copper-catalyzed Ficini [2 + 2] cycloaddition of ynamides

Li, Hongyan,Hsung, Richard P.,Dekorver, Kyle A.,Wei, Yonggang

supporting information; experimental part, p. 3780 - 3783 (2010/10/21)

The Ficini [2 + 2] cycloaddition using N-sulfonyl-substituted ynamides is described, featuring the utility of CuCl2 and AgSbF6 as catalysts. This work represents the first successful example of ynamides participating in a thermal [2 + 2] cycloaddition with enones.

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