146140-55-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 146140-55-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,6,1,4 and 0 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 146140-55:
(8*1)+(7*4)+(6*6)+(5*1)+(4*4)+(3*0)+(2*5)+(1*5)=108
108 % 10 = 8
So 146140-55-8 is a valid CAS Registry Number.
146140-55-8Relevant articles and documents
Thermal cyclization of ketene dithioacetals: A convenient synthetic route to substituted 2(1H)-quinolinones and 2(1H)-pyridones
Pak,Choi
, p. 1291 - 1294 (1992)
Acyl(arylcarbamoyl)ketene dithioacetals 2 and acyl(1-alkenylcarbamoyl)ketene dithioacetals 5 obtained from the corresponding β-oxo amides 1,4 were thermally cyclized to give various 3-acyl-4-alkylthio-2(1H)-quinolinones 3, and 3-acyl-4-alkylthio-5-aryl-2(
