766557-83-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 766557-83-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,6,6,5,5 and 7 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 766557-83:
(8*7)+(7*6)+(6*6)+(5*5)+(4*5)+(3*7)+(2*8)+(1*3)=219
219 % 10 = 9
So 766557-83-9 is a valid CAS Registry Number.
766557-83-9Relevant articles and documents
The chemoselective alkynylation of dihaloquinolines by the Sonogashira-Hagihara reaction
Beletskaya,Latyshev,Tsvetkov,Lukashev
, p. 189 - 193 (2004)
Conditions for the regioselective Sonogashira-Hagihara alkynylation of 4-chloro-6-iodo(bromo)quinolines were found and 6-alkynyl-4-chloroquinolines were obtained in 90-100% yields.