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184173-97-5

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184173-97-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 184173-97-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,4,1,7 and 3 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 184173-97:
(8*1)+(7*8)+(6*4)+(5*1)+(4*7)+(3*3)+(2*9)+(1*7)=155
155 % 10 = 5
So 184173-97-5 is a valid CAS Registry Number.

184173-97-5Downstream Products

184173-97-5Relevant articles and documents

Chemoselective Synthesis of Polysubstituted Pyridines from Heteroaryl Fluorosulfates

Zhang, Enxuan,Tang, Jiaze,Li, Suhua,Wu, Peng,Moses, John E.,Sharpless, K. Barry

, p. 5692 - 5697 (2016)

A selection of heteroaryl fluorosulfates were readily synthesized using commercial SO2F2 gas. These substrates are highly efficient coupling partners in the Suzuki reaction. Through judicious selection of Pd catalysts the fluorosulfate functionality is differentiated from bromide and chloride; the order of reactivity being: -Br> -OSO2F> -Cl. Exploiting this trend allowed the stepwise chemoselective synthesis of a number of polysubstituted pyridines, including the drug Etoricoxib. A selection of heteroaryl fluorosulfates were readily synthesized using commercial SO2F2 gas. These substrates are highly efficient coupling partners in the Suzuki reaction. Through judicious selection of Pd catalysts the fluorosulfate functionality is differentiated from bromide and chloride; the order of reactivity being: -Br> -OSO2F> -Cl. Exploiting this trend allowed the stepwise chemoselective synthesis of a number of polysubstituted pyridines, including the drug Etoricoxib.

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