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182816-49-5

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182816-49-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 182816-49-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,2,8,1 and 6 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 182816-49:
(8*1)+(7*8)+(6*2)+(5*8)+(4*1)+(3*6)+(2*4)+(1*9)=155
155 % 10 = 5
So 182816-49-5 is a valid CAS Registry Number.

182816-49-5Relevant articles and documents

Pyridine hydrochloride: A new reagent for the synthesis of o-chloro hydroxy derivatives in pyridine and quinoline series

Mongin, Florence,Mongin, Olivier,Trecourt, Francois,Godard, Alain,Queguiner, Guy

, p. 6695 - 6698 (2007/10/03)

Pyridine hydrochloride has been widely used in the cleavage of ethers. It is shown herein that his reagent is also efficient for the synthesis of chloro compounds starting from the corresponding bromo derivatives in π-deficient series such as pyridine and quinoline. Thus, for example, 7-bromo-8-hydroxyquinoline was almost quantitatively converted into 7-chloro-8-hydroxyquinoline. The scope of the reaction has been studied.

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