139439-36-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139439-36-4 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 6 respectively.
Calculate Digit Verification of CAS Registry Number 139439-36:
(8*1)+(7*3)+(6*9)+(5*4)+(4*3)+(3*9)+(2*3)+(1*6)=154
154 % 10 = 4
So 139439-36-4 is a valid CAS Registry Number.
139439-36-4Relevant articles and documents
Synthesis of 1-(2-polyfluoroacylaminophenyl)-3-polyfluoroalkylpropane-1,3-diones and 2-polyfluoroalkyl-4-quinolones
Sosnovskikh,Usachev,Sizov
, p. 2109 - 2115 (2002)
The condensation of 2-aminoacetophenone with RFCO2Et (RF = CF3, CF2H, CF2CF2H) in the presence of LiH in THF or ButOK in ButOH affords either 2-polyfluoroal