144221-40-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 144221-40-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,4,2,2 and 1 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 144221-40:
(8*1)+(7*4)+(6*4)+(5*2)+(4*2)+(3*1)+(2*4)+(1*0)=89
89 % 10 = 9
So 144221-40-9 is a valid CAS Registry Number.
144221-40-9Relevant academic research and scientific papers
One-pot synthesis of 2,3-dihydro-2,3-disubstituted benzo[g]quinazolin-4(1H)-ones
Kumar,Reddy
, p. 2499 - 2508 (2007/10/02)
Condensation of 2H-naphth[2,3-d][3,1]oxazin-2,4 (1H)-dione (1) with schiff bases (2) in acetic acid resulted in the formation of 2,3-dihydro-2,3-diarylbenzo[g]quinazolin-4 (1H)-ones (3). Reaction of 1 with ketoanils generated in situ results in 2,3-dihydr
