138640-04-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138640-04-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,6,4 and 0 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 138640-04:
(8*1)+(7*3)+(6*8)+(5*6)+(4*4)+(3*0)+(2*0)+(1*4)=127
127 % 10 = 7
So 138640-04-7 is a valid CAS Registry Number.
138640-04-7Relevant academic research and scientific papers
On the preparation and structural determination of 3-arylisoquinolinones
Dominguez,Martinez De Marigorta,Carrillo,Fananas
, p. 9253 - 9258 (2007/10/02)
Two new methods for the oxidation of 3-aryl-3,4-dihydroisoquinolinium salts to 3-arylisoquinolinones have been developed: the direct ferricyanide oxidation and the air-oxidation of 1-cyanoisoquinoline intermediates.
