544708-57-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 544708-57-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,4,4,7,0 and 8 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 544708-57:
(8*5)+(7*4)+(6*4)+(5*7)+(4*0)+(3*8)+(2*5)+(1*7)=168
168 % 10 = 8
So 544708-57-8 is a valid CAS Registry Number.
544708-57-8Relevant articles and documents
Synthesis of tripodal [2]rotaxanes: High concentration principle
Nikitin, Kirill,Long, Brenda,Fitzmaurice, Donald
, p. 282 - 283 (2003)
Symmetrical and non-symmetrical tripodal [2]rotaxanes (1) incorporating 1,1'-disubstituted-4,4′-bipyridinium cations (2) and 34-crown-10 (3) have been prepared directly from 4,4′-bipyridine or from monocationic intermediates in high yields at room tempera