Cas 22191-17-9,C14H12N2O4S2

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Check Digit Verification of cas no

The CAS Registry Mumber 22191-17-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,1,9 and 1 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 22191-17:
(7*2)+(6*2)+(5*1)+(4*9)+(3*1)+(2*1)+(1*7)=79
79 % 10 = 9
So 22191-17-9 is a valid CAS Registry Number.

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22191-17-9Relevant academic research and scientific papers

Efficient access to 1,4-benzothiazine: Palladium-catalyzed double C-S bond formation using Na2S2O3 as sulfurating reagent

Qiao, Zongjun,Liu, Hui,Xiao, Xiao,Fu, Yana,Wei, Jianpeng,Li, Yuxue,Jiang, Xuefeng

, p. 2594 - 2597 (2013/07/19)

A novel Pd-catalyzed double C-S bond formation coupling reaction has been developed. This protocol, in which Na2S2O3 was used as sulfurating reagent in metal-catalyzed reactions, provides an efficient method for the synthe

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