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137002-83-6

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137002-83-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137002-83-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,0,0 and 2 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 137002-83:
(8*1)+(7*3)+(6*7)+(5*0)+(4*0)+(3*2)+(2*8)+(1*3)=96
96 % 10 = 6
So 137002-83-6 is a valid CAS Registry Number.

137002-83-6Relevant articles and documents

Electrophilic Benzylation of 2-Aminopyridine Ring

Kowalski, Piotr

, p. 875 - 879 (2007/10/02)

In the reaction of 2-aminopyridine and its 3- or 5-methyl derivatives with benzyl chloride used in a molar ratio of 1:2, benzylation of 2-aminopyridine ring has been stated that 2-amino-3- or 5-benzylpyridines c as the major products were obtained.Formation of c type compounds took place in the decomposition of 2-benzylamino-3- or 5-benzylpyridines b obtained in the reaction of the 2-benzylaminopyridines a, excess benzyl chloride was used.Production of the b and c compounds, where the benzyl substituent occupied position 3 or 5 in 2-aminopyridine supported the electrophilic mechanism of the reaction (radical reaction was excluded).In the case of 2-aminopyridine and its 3-methyl derivative bis-(2-amino-5-pyridyl)phenylmethanes d were formed as the by-products.

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