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1403749-43-8

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1403749-43-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1403749-43-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,0,3,7,4 and 9 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1403749-43:
(9*1)+(8*4)+(7*0)+(6*3)+(5*7)+(4*4)+(3*9)+(2*4)+(1*3)=148
148 % 10 = 8
So 1403749-43-8 is a valid CAS Registry Number.

1403749-43-8Downstream Products

1403749-43-8Relevant articles and documents

N-heterocyclic carbene catalyzed enantioselective α-fluorination of aliphatic aldehydes and α-chloro aldehydes: Synthesis of α-fluoro esters, amides, and thioesters

Dong, Xiuqin,Yang, Wen,Hu, Weimin,Sun, Jianwei

, p. 660 - 663 (2015)

The asymmetric fluorination of azolium enolates that are generated from readily available simple aliphatic aldehydes or α-chloro aldehydes and N-heterocyclic carbenes (NHCs) is described. The process significantly expands the synthetic utility of NHC-catalyzed fluorination and provides facile access to a wide range of α-fluoro esters, amides, and thioesters with excellent enantioselectivity. Pyrazole was identified as an excellent acyl transfer reagent for catalytic amide formation.

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