890136-73-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 890136-73-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,9,0,1,3 and 6 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 890136-73:
(8*8)+(7*9)+(6*0)+(5*1)+(4*3)+(3*6)+(2*7)+(1*3)=179
179 % 10 = 9
So 890136-73-9 is a valid CAS Registry Number.
890136-73-9Relevant academic research and scientific papers
Efficient phenanthrene, helicene, and azahelicene syntheses
Harrowven, David C.,Guy, Ian L.,Nanson, Lana
, p. 2242 - 2245 (2007/10/03)
Homolytic aromatic substitution reactions are used for the efficient regioselective synthesis of helicenes, phenanthrenes, and azahelicenes. The use of halo and alkoxy substituents to control the stereochemical outcome of this approach and X-ray studies o
