81198-71-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81198-71-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,1,9 and 8 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 81198-71:
(7*8)+(6*1)+(5*1)+(4*9)+(3*8)+(2*7)+(1*1)=142
142 % 10 = 2
So 81198-71-2 is a valid CAS Registry Number.
81198-71-2Relevant academic research and scientific papers
Fluoroalkylation et annelation de β-dicetones cycliques
Elkik, Elias,Dahan, Rachel,Parlier, Andree
, p. 353 - 360 (2007/10/02)
We describe a general method of preparation of α-fluoro-β-chloro (or bromo) ethylketones 2 by reaction of Grignard reagents with α-fluoro-β-chloro (or bromo) propionic ethyl esters 1 : CH2X-CHF-COOEt (1)+ RMgX R-CO-CHF-CH2X (2); X = Cl, Br; R = alipha
