117489-22-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 117489-22-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,4,8 and 9 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 117489-22:
(8*1)+(7*1)+(6*7)+(5*4)+(4*8)+(3*9)+(2*2)+(1*2)=142
142 % 10 = 2
So 117489-22-2 is a valid CAS Registry Number.
117489-22-2Relevant articles and documents
Cyclocondensation of 3-Aryl-2-cyano-2-butenoic Acid Esters with Schiff Bases
Cholakova, Ts. P.,Ivanov, Kh.
, p. 173 - 175 (2007/10/02)
The condensation of ethyl 3-aryl-2-cyano-2-butenoates with benzylideneanilines in the presence of aluminum chloride affords 1,4,6-triaryl-2-oxo-1,2,5,6-tetrahydropyridine-2-carbonitriles; the reaction with hydrobenzamide gives N-unsubstituted tetrahydropy