6665-68-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6665-68-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,6,6 and 5 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 6665-68:
(6*6)+(5*6)+(4*6)+(3*5)+(2*6)+(1*8)=125
125 % 10 = 5
So 6665-68-5 is a valid CAS Registry Number.
6665-68-5Relevant academic research and scientific papers
A one-step synthesis of 5-hydroxyflavones
Bois, Frédéric,Beney, Chantal,Mariotte, Anne-Marie,Boumendjel, Ahcène
, p. 1480 - 1482 (2007/10/03)
5-hydroxy flavones were prepared in one step starting from 2,6- dihydroxyacetophenone. The latter was treated with an aroyl chloride in the presence of an excess of potassium carbonate to afford 5-hydroxyflavones.