117239-42-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 117239-42-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,2,3 and 9 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 117239-42:
(8*1)+(7*1)+(6*7)+(5*2)+(4*3)+(3*9)+(2*4)+(1*2)=116
116 % 10 = 6
So 117239-42-6 is a valid CAS Registry Number.
117239-42-6Relevant articles and documents
Synthesis of 4,12-Dihydro-4-oxoquinoquinoxaline-5-carboxylic Acid Derivatives
Chu, Daniel T. W.,Maleczka, Robert E.,Nordeen, Carl W.
, p. 927 - 930 (2007/10/02)
The synthesis and antibacterial activity of 1-substituted amino-2-fluoro-4,12-dihydro-4-oxoquinoquinoxaline-5-carboxylic acid derivatives are described.The synthetic route includes a carbon homologation and two intramolecular nucleophilic disp