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4974-86-1

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4974-86-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4974-86-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,9,7 and 4 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 4974-86:
(6*4)+(5*9)+(4*7)+(3*4)+(2*8)+(1*6)=131
131 % 10 = 1
So 4974-86-1 is a valid CAS Registry Number.

4974-86-1Relevant articles and documents

Mechanistic aspects of aminium salt-catalyzed Diels-Alder reactions: The substrate ionization step

Yueh, Wang,Bauld, Nathan L.

, p. 529 - 538 (1996)

Substituent effects in the aminium salt catalyzed Diels-Alder reactions of 2,3-dimetnyl-1,3-butadiene with a series of meta and para substituted β-methylstyrenes are used to probe detailed mechanistic aspects of these reactions. Kinetic studies were carried out using two different aminium salt catalysts and also electrochemically, using anodic potentials corresponding to the oxidation potentials of the aminium salts. Substituent effects in the equilibrium oxidations of the styrene substrates to the corresponding cation radicals were also studied, via oxidation potential measurements. The results indicate rate determining one electron oxidation of the sytrenes to their cation radicals via an outer sphere electron transfer.

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