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1240050-59-2

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1240050-59-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1240050-59-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,4,0,0,5 and 0 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1240050-59:
(9*1)+(8*2)+(7*4)+(6*0)+(5*0)+(4*5)+(3*0)+(2*5)+(1*9)=92
92 % 10 = 2
So 1240050-59-2 is a valid CAS Registry Number.

1240050-59-2Downstream Products

1240050-59-2Relevant academic research and scientific papers

Highly efficient and expedient synthesis of 5-hydroxy-1 H-pyrrol-2-(5 H)-ones from FeCl3-catalyzed tandem intramolecular enaminic addition of tertiary enamides to ketones and 1,3-hydroxy rearrangement

Yang, Luo,Lei, Chuan-Hu,Wang, De-Xian,Huang, Zhi-Tang,Wang, Mei-Xiang

, p. 3918 - 3921 (2010)

Catalyzed by FeCl3 under very mild conditions, tertiary enamides underwent a highly efficient intramolecular enaminic addition reaction to the ketonic carbonyls followed by 1,3-hydroxy rearrangement to produce 5-hydroxy-1H-pyrrol-2(5H)-ones in

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