820221-68-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 820221-68-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,2,0,2,2 and 1 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 820221-68:
(8*8)+(7*2)+(6*0)+(5*2)+(4*2)+(3*1)+(2*6)+(1*8)=119
119 % 10 = 9
So 820221-68-9 is a valid CAS Registry Number.
820221-68-9Relevant articles and documents
Novel π-expanded radialene macrocycles with inner cavity
Iyoda, Masahiko,Kuwatani, Yoshiyuki,Yamagata, Sachiko,Nakamura, Nobuko,Todaka, Mie,Yamamoto, Gaku
, p. 4667 - 4670 (2007/10/03)
(Chemical Equation Presented) Polyenyne macrocycles with π-extended [9]- and [12]radialene frameworks have been synthesized. These radialenes exhibit restricted rotation of the aromatic rings, and the D3- and D 4-symmetric structures
