1181823-98-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1181823-98-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,8,1,8,2 and 3 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1181823-98:
(9*1)+(8*1)+(7*8)+(6*1)+(5*8)+(4*2)+(3*3)+(2*9)+(1*8)=162
162 % 10 = 2
So 1181823-98-2 is a valid CAS Registry Number.
1181823-98-2Relevant academic research and scientific papers
Dimerization of 3-(2-aryl-2-oxoethylidene)oxindoles
Paponov,Shishkin,Shishkina,Zubatyuk,Kalyuzhny,Musatov
experimental part, p. 622 - 631 (2009/05/15)
6-Aroyl-7-arylindolo[3,4-jk]phenanthridin-5(4H)-ones (2a-i) were synthesized by heating 3-(2-aryl-2-oxoethylidene)-2,3-dihydroindol-2-ones (1a-i) in DMF. Compounds 2a-i are formed via the dimerization of two molecules of unsaturated ketones 1a-i proceedin
