87494-57-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 87494-57-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,4,9 and 4 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 87494-57:
(7*8)+(6*7)+(5*4)+(4*9)+(3*4)+(2*5)+(1*7)=183
183 % 10 = 3
So 87494-57-3 is a valid CAS Registry Number.
87494-57-3Relevant articles and documents
Synthesis of -Catenanes from -Rotaxanes
Schill, Gottfried,Schweickert, Norbert,Fritz, Hans,Vetter, Walter
, p. 961 - 970 (2007/10/02)
Starting from the rotaxane 18a a mixture of catenane 21 and rotaxane 23 is obtained by attaching a polymethylene bridge between the methylene groups in α-position of the sulfonyl groups.The isocyclic catenane 28 containing a 28- and a 46-membered ring is