405296-91-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 405296-91-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,5,2,9 and 6 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 405296-91:
(8*4)+(7*0)+(6*5)+(5*2)+(4*9)+(3*6)+(2*9)+(1*1)=145
145 % 10 = 5
So 405296-91-5 is a valid CAS Registry Number.
405296-91-5Relevant articles and documents
Synthesis of some tricyclic and tetracyclic ring systems built on 4-hydroxy-2-quinolones
Dodia, Narsinh,Shah, Anamik
, p. 289 - 294 (2007/10/03)
Few substituted 4-hydroxy-2-quinolones were reacted with cinnamonitrile to afford fused pyrano [3,2-c] quinolines. They were further subjected to ring formation by means of acetic anhydride with or without pyridine.