20454-87-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20454-87-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,4,5 and 4 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 20454-87:
(7*2)+(6*0)+(5*4)+(4*5)+(3*4)+(2*8)+(1*7)=89
89 % 10 = 9
So 20454-87-9 is a valid CAS Registry Number.
20454-87-9Relevant articles and documents
High π-route reactivity in the tropene system. Absence of a nitrogen acceleration effect
Murr, Brown L.,Parkhill, Billy J.,Nickon, Alex
, p. 4845 - 4862 (2007/10/02)
Solvolyses of a suitably constructed tropene tosylate and its unsaturated carbocyclic analog show that the amino function, despite its suitable spatial location, does not enhance the π-route assistance but reduces it slightly.
