251913-42-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 251913-42-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,1,9,1 and 3 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 251913-42:
(8*2)+(7*5)+(6*1)+(5*9)+(4*1)+(3*3)+(2*4)+(1*2)=125
125 % 10 = 5
So 251913-42-5 is a valid CAS Registry Number.
251913-42-5Relevant articles and documents
Synthesis of 7-vinylflavone and 7-aminoflavone by palladium-catalyzed coupling reactions
Deng, Bo-Liang,Lepoivre, Jozef Arsene,Lemiere, Guy
, p. 2683 - 2688 (2007/10/03)
Palladium-catalyzed cross-coupling reactions of flavone triflates 2a-c, 4a with tetravinyltin give the corresponding vinylflavones 5a-d, whereas reactions with benzophenone imine, followed by cleavage, afford the corresponding aminoflavone.
