139185-40-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139185-40-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,1,8 and 5 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 139185-40:
(8*1)+(7*3)+(6*9)+(5*1)+(4*8)+(3*5)+(2*4)+(1*0)=143
143 % 10 = 3
So 139185-40-3 is a valid CAS Registry Number.
139185-40-3Relevant academic research and scientific papers
Synthesis and reactions of functionalized perfluoroalkyl sulfones
Hanack,Bailer,Hackenberg,Subramanian
, p. 1205 - 1208 (2007/10/02)
The hitherto unknown 2-aryl-1-(perfluoroalkanesulfonyl)acrylonitriles 9(R(F) = CF3, C4F9) were prepared by Knoevenagel condensation of (perfluoroalkanesulfonyl)acetonitriles 7 with aromatic aldehydes. The nitriles 7 were p
