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253274-26-9

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253274-26-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 253274-26-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,3,2,7 and 4 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 253274-26:
(8*2)+(7*5)+(6*3)+(5*2)+(4*7)+(3*4)+(2*2)+(1*6)=129
129 % 10 = 9
So 253274-26-9 is a valid CAS Registry Number.

253274-26-9Downstream Products

253274-26-9Relevant articles and documents

N-aryl heterocycles via coupling reactions with arylboronic acids

Mederski, Werner W.K.R.,Lefort, Marina,Germann, Martina,Kux, Dieter

, p. 12757 - 12770 (2007/10/03)

Compounds having a partial 2-pyridone structure or 3-pyridazinones can be selectively N-arylated with phenylboronic acids according to the procedure described by Chan and Lam. This procedure leads to N5-arylated imidazo[4,5- c]pyridin-4-ones, precursors of potent factor Xa inhibitors. In addition, the synthesis of N-aryl substituted pyrrole- and indole-2-carboxylic acid esters is described. In the indole series this procedure offers a flexible entry in the synthesis of different 1,3-diaryl-2-carboxyindoles.

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