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847225-59-6

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847225-59-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 847225-59-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,4,7,2,2 and 5 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 847225-59:
(8*8)+(7*4)+(6*7)+(5*2)+(4*2)+(3*5)+(2*5)+(1*9)=186
186 % 10 = 6
So 847225-59-6 is a valid CAS Registry Number.

847225-59-6Relevant articles and documents

Tetrabutylammonium salt induced denitration of nitropyridines: Synthesis of fluoro-, hydroxy-, and methoxypyridines

Kuduk, Scott D.,DiPardo, Robert M.,Bock, Mark G.

, p. 577 - 579 (2007/10/03)

(Chemical Equation Presented) An efficient method for the synthesis of fluoropyridines via the fluorodenitration reaction is reported. The reaction is mediated by tetrabutylammonium fluoride (TBAF) under mild conditions without undue regard to the presence of water. The fluorodenitration is general for 2- or 4-nitro-substituted pyridines, while 3-nitropyridines require attendant electron-withdrawing groups for the reaction to proceed efficiently. Nitropyridines also undergo hydroxy- and methoxydenitration under mild conditions in the presence of the corresponding tetrabutylammonium species.

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