159645-64-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 159645-64-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,9,6,4 and 5 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 159645-64:
(8*1)+(7*5)+(6*9)+(5*6)+(4*4)+(3*5)+(2*6)+(1*4)=174
174 % 10 = 4
So 159645-64-4 is a valid CAS Registry Number.
159645-64-4Relevant articles and documents
Mechanism of a Novel Spirocyclisation Reaction; Intramolecular Oxygen Transfer to Carbon Radicals by Nitro Groups
Topiwala, Upendra P.,Whiting, Donald A.
, p. 2443 - 2444 (1994)
A mechanism for the novel radical spirocyclisation reaction 1 -> 2 is proposed, and is shown by isotopic labelling to involve transfer of oxygen from an aromatic nitro function to carbon in a cyclohexadienyl radical.
