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209473-21-2

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209473-21-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 209473-21-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,9,4,7 and 3 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 209473-21:
(8*2)+(7*0)+(6*9)+(5*4)+(4*7)+(3*3)+(2*2)+(1*1)=132
132 % 10 = 2
So 209473-21-2 is a valid CAS Registry Number.

209473-21-2Relevant articles and documents

Preparation of thiazoles

-

, (2008/06/13)

Described is a process for the preparation of a compound of formula (I) wherein R is unsubstituted or substituted C1-C12alkyl, C2-C4alkenyl, C2-C4alkynyl, C3-C6cycloal

Synthetic approaches towards CGA 293'343: A novel broad-spectrum insecticide

Goebel, Thomas,Gsell, Laurenz,Hueter, Ottmar F.,Maienfisch, Peter,Naef, Rudolf,O'Sullivan, Anthony C.,Pitterna, Thomas,Rapold, Thomas,Seifert, Gottfried,Senn, Marcel,Szczepanski, Henry,Wadsworth, David J.

, p. 355 - 357 (2007/10/03)

Synthetic approaches towards CGA 293'343 (ISO draft common name: thiamethoxam), a novel broad-spectrum insecticide from the class neonicotinoids, are described. 2-Chloro-5-chloromethylthiazole, an important synthetic intermediate, was prepared from five different precursors. Alternatively, CGA 293'343 was prepared via the intermediate 2-benzylmercapto-5-chloromethylthiazole, the synthesis of which is also described.

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