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200930-72-9

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200930-72-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 200930-72-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,0,9,3 and 0 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 200930-72:
(8*2)+(7*0)+(6*0)+(5*9)+(4*3)+(3*0)+(2*7)+(1*2)=89
89 % 10 = 9
So 200930-72-9 is a valid CAS Registry Number.

200930-72-9Relevant articles and documents

Synthesis of Pyridylsulfonium Salts and Their Application in the Formation of Functionalized Bipyridines

Duong, Vincent K.,Horan, Alexandra M.,McGarrigle, Eoghan M.

supporting information, p. 8451 - 8457 (2020/11/12)

An S-selective arylation of pyridylsulfides with good functional group tolerance was developed. To demonstrate synthetic utility, the resulting pyridylsulfonium salts were used in a scalable transition-metal-free coupling protocol, yielding functionalized bipyridines with extensive functional group tolerance. This modular methodology permits selective introduction of functional groups from commercially available pyridyl halides, furnishing symmetrical and unsymmetrical 2,2′- A nd 2,3′-bipyridines. Iterative application of the methodology enabled the synthesis of a functionalized terpyridine with three different pyridine components.

Nucleophilic substitutions at the pyridine ring. Conformational preference of the products and kinetics of the reactions of 2-chloro-3-nitro- and 2-chloro-5-nitro-pyridines with arenethiolates

Hamed, Ezzat A.,El-Bardan, Ali A.,Saad, Esmat F.,Gohar, Gamal A.,Hassan, Ghada M.

, p. 2415 - 2421 (2007/10/03)

The reactions of 2-chloro-3-nitropyridine 1 and 2-chloro-5-nitropyridine 2 with arenethiolates 3a-i result in arylthio-dechlorination to give 2-arylthio-3-nitropyridines 4a-i and 2-arylthio-5-nitropyridines 5a-i. A 1H NMR study and AM1 calculat

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