22440-25-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 22440-25-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,4,4 and 0 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 22440-25:
(7*2)+(6*2)+(5*4)+(4*4)+(3*0)+(2*2)+(1*5)=71
71 % 10 = 1
So 22440-25-1 is a valid CAS Registry Number.
22440-25-1Relevant 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
