109773-32-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109773-32-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,7,7 and 3 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 109773-32:
(8*1)+(7*0)+(6*9)+(5*7)+(4*7)+(3*3)+(2*3)+(1*2)=142
142 % 10 = 2
So 109773-32-2 is a valid CAS Registry Number.
109773-32-2Relevant articles and documents
A Convenient Synthesis of 1-Alkyl-4-oxo-1,4-dihydrocinnolines
Buttero, Paola Del,Licandro, Emanuela,Maiorana, Stefano,Papagni, Antonio
, p. 1059 - 1061 (2007/10/02)
The reaction of 4-oxo-3-triphenylphosphoranyliden-3,4-dihydro-cinnolines with alkyl halides, followed by basic hydrolysis, affords the title compounds in good yields.These compounds are not easily accessible by other routes.