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209797-40-0

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209797-40-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 209797-40-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,9,7,9 and 7 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 209797-40:
(8*2)+(7*0)+(6*9)+(5*7)+(4*9)+(3*7)+(2*4)+(1*0)=170
170 % 10 = 0
So 209797-40-0 is a valid CAS Registry Number.

209797-40-0Relevant academic research and scientific papers

Reaction of organozinc halides with aryl isocyanates

Yang, Haoran,Huang, Danfeng,Wang, Ke-Hu,Xu, Changming,Niu, Teng,Hu, Yulai

supporting information, p. 2588 - 2593 (2013/03/28)

Reformatsky reagent, benzylzinc bromide or alkylzinc iodides react with aryl isocyanates directly to give corresponding N-substituted carbamates under mild reaction conditions. However, the reaction of allylzinc bromide or propargylzinc bromide with aryl isocyanates produces the corresponding N-substituted amides. The reactions provide alternative methods for the synthesis of N-substituted carbamates or amides.

The Synthesis of Butenamides and Thiobutenamide by an Organosamarium Reagent

Yu, Mingxin,Zhang, Yongmin,Qian, Cangtao

, p. 256 - 257 (2007/10/03)

An organosamarium reagent reacts with isocyanates (or isothiocyanate) to afford butenamides (or thiobutenamide) in THF.

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