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1234199-69-9

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1234199-69-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1234199-69-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,4,1,9 and 9 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1234199-69:
(9*1)+(8*2)+(7*3)+(6*4)+(5*1)+(4*9)+(3*9)+(2*6)+(1*9)=159
159 % 10 = 9
So 1234199-69-9 is a valid CAS Registry Number.

1234199-69-9Downstream Products

1234199-69-9Relevant academic research and scientific papers

N,N′-Dioxide-nickel(II) complex catalyzed asymmetric Michael addition of cyclic 1,3-dicarbonyl compounds to β,γ-unsaturated α-ketoesters

Dong, Zhenhua,Feng, Juhua,Cao, Weidi,Liu, Xiaohua,Lin, Lili,Feng, Xiaoming

supporting information; body text, p. 3433 - 3436 (2011/06/27)

A direct asymmetric Michael addition of cyclic 1,3-dicarbonyl compounds to β,γ-unsaturated α-ketoesters could be efficiently catalyzed by an N,N′-dioxide-nickel(II) complex. A series of chiral warfarin derivatives were obtained in excellent yields (up to 99%) with high enantioselectivities (up to 90% ee) under mild conditions within shorter reaction time.

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