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42041-91-8

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42041-91-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 42041-91-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,0,4 and 1 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 42041-91:
(7*4)+(6*2)+(5*0)+(4*4)+(3*1)+(2*9)+(1*1)=78
78 % 10 = 8
So 42041-91-8 is a valid CAS Registry Number.

42041-91-8Downstream Products

42041-91-8Relevant articles and documents

Synthesis and oxidative behaviour of reduced indenoquinoxalines and benzophenazines

Brown, David W.,Mahon, Mary F.,Ninan, Aleyamma,Sainsbury, Malcolm

, p. 3117 - 3124 (2007/10/03)

New routes to tetracyclic quinoxalines have been explored and their oxidative behaviour has been examined.Only if such compounds are devoid of benzylic hydrogen atoms are the corresponding cation radicals stable.Attempts to prepare certain polymethylated quinoxalines failed because of steric problems, and evidence is presented to show that in the case of some monohydrochloride salts proton migration between two nitrogen atoms is discernable through 1H NMR spectroscopy.

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