280581-99-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 280581-99-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,0,5,8 and 1 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 280581-99:
(8*2)+(7*8)+(6*0)+(5*5)+(4*8)+(3*1)+(2*9)+(1*9)=159
159 % 10 = 9
So 280581-99-9 is a valid CAS Registry Number.
280581-99-9Relevant articles and documents
The 'Eenie-Meenie reaction'. Displacement reactions of bisanilinopyrimidines
Pearson, Stuart E.,Wood, Robin
, p. 1303 - 1306 (2002)
A novel acid-catalysed nucleophilic displacement reaction of pyrimidines is described, involving quinone-methide type chemistry. A wide range of nucleophiles can be tolerated. A similar mechanism is also applied to the synthesis of a tricyclic system.