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83495-25-4

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83495-25-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 83495-25-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,4,9 and 5 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 83495-25:
(7*8)+(6*3)+(5*4)+(4*9)+(3*5)+(2*2)+(1*5)=154
154 % 10 = 4
So 83495-25-4 is a valid CAS Registry Number.

83495-25-4Downstream Products

83495-25-4Relevant articles and documents

A Novel Friedel-Crafts Type Reaction of 2-Chlorothiophene with Some Active Aromatic Compounds

Sone, Tyo,Yokoyama, Ryoji,Okuyama, Yohko,Sato, Kazuaki

, p. 83 - 88 (2007/10/02)

2-Chlorothiophene (1) was found to easily react with certain active aromatic compounds (2) in the presence of AlCl3 under mild conditions, yielding the corresponding 2-arylthiophenes (3) and 5-chloro-2,2'-bithienyl (5) as the main products.With compounds more reactive than 1, the formation of 3 predominated.Reactions of 1 with aryl alkyl ethers, for example, afforded the corresponding 3 in 44-83percent yields in one step.

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