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131947-27-8

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131947-27-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 131947-27-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,9,4 and 7 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 131947-27:
(8*1)+(7*3)+(6*1)+(5*9)+(4*4)+(3*7)+(2*2)+(1*7)=128
128 % 10 = 8
So 131947-27-8 is a valid CAS Registry Number.

131947-27-8Relevant articles and documents

THE PREPARATION AND PROPERTIES OF 2-HYDROXY-2-(PYRIDYLAMINO)-1,1,1-TRIHALOETHANES

Bal'on, Ya. G.,Shul'man, M. D.,Smirnov, V. A.,Yukhomenko, M. M.,Yukhomenko, M. A.

, p. 1352 - 1356 (2007/10/02)

Aminopyridines were condensed with trihaloacetaldehyde under mild conditions to give 2-hydroxy-2-(pyridylamino)-1,1,1-trihaloethanes, which has aminoalkyalting properties.With aromatic hydrocarbons in the presence of concentrated sulfuric acid, these trihaloethanes give the products of substitution of the hydroxyl group by an aryl residue.These products are smoothly converted upon heating to give imidazopyridine derivatives.

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