178243-83-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 178243-83-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,8,2,4 and 3 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 178243-83:
(8*1)+(7*7)+(6*8)+(5*2)+(4*4)+(3*3)+(2*8)+(1*3)=159
159 % 10 = 9
So 178243-83-9 is a valid CAS Registry Number.
178243-83-9Relevant academic research and scientific papers
Heteroannulation of cyclic enaminone and dimedone
Assy,Abd-Ell Motti
, p. 608 - 610 (2007/10/03)
Enaminone (1) undergo cyclization with benzylidenes (2a-c) to give quinolines (3a-c) which are converted into quinolinopyrimidines (5a-c) by treatment with benzoylisothiocyanate. Cyclocondensation of 1 with benzolisothiocyanate furnishes quinazolone (7).
