139439-32-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139439-32-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,4,3 and 9 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 139439-32:
(8*1)+(7*3)+(6*9)+(5*4)+(4*3)+(3*9)+(2*3)+(1*2)=150
150 % 10 = 0
So 139439-32-0 is a valid CAS Registry Number.
139439-32-0Relevant academic research and scientific papers
N-Alkylated 2-trifluoromethyl-4-quinolones by addition of base and an alkylating agent to 2-trifluoroacetylaminoacetophenones
Combs,Reed,Klaubert
, p. 323 - 326 (2007/10/02)
2-Trifluoroacetylaminoacetophenones 1 are cyclized to N-alkyl-2-trifluoromethyl-4-quinolones 2 in one pot with concomitant N-alkylation in 40 to 74% yield using potassium hydroxide in acetone containing an alkylating agent.
