122457-26-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 122457-26-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,2,4,5 and 7 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 122457-26:
(8*1)+(7*2)+(6*2)+(5*4)+(4*5)+(3*7)+(2*2)+(1*6)=105
105 % 10 = 5
So 122457-26-5 is a valid CAS Registry Number.
122457-26-5Relevant articles and documents
Synthesis of the Food Mutagens MeIQx and 4,8-DiMeIQx by Copper(I) Promoted Quinoxaline Formation
Knapp, Spencer,Ziv, Joseph,Rosen, Joseph D.
, p. 1293 - 1298 (2007/10/02)
The regiocontrolled syntheses of the title compounds (1 and 2) is described.The key step is a new intramolecular alkyne amination and aromatization process (5 6; 8 9) effected by tetrakis(acetonitrile)copper(I) tetrafluoroborate.