Cas 16344-33-5,2-(2-nitro-anilino)-nicotinic acid

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Check Digit Verification of cas no

The CAS Registry Mumber 16344-33-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,3,4 and 4 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 16344-33:
(7*1)+(6*6)+(5*3)+(4*4)+(3*4)+(2*3)+(1*3)=95
95 % 10 = 5
So 16344-33-5 is a valid CAS Registry Number.

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16344-33-5Relevant articles and documents

Improvement of the Ullmann's condensation method for the synthesis of 2-anilinonicotinic acids

Misbahi, Houria,Brouant, Pierre,Barbe, Jacques

, p. 335 - 336 (2007/10/03)

Several 2-anilinonicotinic acid derivatives were prepared under the Ullmann's reaction conditions by condensation of 2-chloronicotinic acid and various substituted anilines. Improvement of the procedure based on the effect of the catalyst and that of the

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16344-33-5