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179870-09-8

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179870-09-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 179870-09-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,9,8,7 and 0 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 179870-09:
(8*1)+(7*7)+(6*9)+(5*8)+(4*7)+(3*0)+(2*0)+(1*9)=188
188 % 10 = 8
So 179870-09-8 is a valid CAS Registry Number.

179870-09-8Downstream Products

179870-09-8Relevant articles and documents

Synthesis of 2-arylfuro[3,2-c]pyridines and their derivatives

Krutosikova, Alzbeta,Sleziak, Robert

, p. 1627 - 1636 (2007/10/03)

A series of 2-arylfuro[3,2-c]pyridines was synthesized. 3-(5-Aryl-2-furyl)propenoic acids 1a-1h were converted to the acid azides 2a-2h, which in turn were cyclized to give 2-arylfuro[3,2-c]pyridine-4(5H)-ones 4a-4h by heating in Dowtherm. The pyridones 4a-4f were aromatized with phosphorus oxychloride to the 2-aryl-4-chlorofuro[3,2-c]pyridines 5a-5f, which were reduced with zinc and acetic acid to the title compounds 6a-6f. Reacted with phosphorus(V) sulfide, the pyridones 4a-4f yielded the corresponding thiones 7a-7f.

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