689276-61-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 689276-61-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,9,2,7 and 6 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 689276-61:
(8*6)+(7*8)+(6*9)+(5*2)+(4*7)+(3*6)+(2*6)+(1*1)=227
227 % 10 = 7
So 689276-61-7 is a valid CAS Registry Number.
689276-61-7Relevant articles and documents
A novel synthesis of chiral rotaxanes via covalent bond formation
Kameta, Naohiro,Hiratani, Kazuhisa,Nagawa, Yoshinobu
, p. 466 - 467 (2004)
Chiral rotaxanes composed of the asymmetric crownophane incorporating two hydroxy groups as a rotor moiety and the asymmetric axis were effectively synthesized via covalent bond formation, i.e. tandem Claisen rearrangement, esterification, and aminolysis.