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DL-3,4-Bis(4-tert-butylphenyl)-2,2,5,5-tetramethylhexan is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

86439-83-0

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86439-83-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 86439-83-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,6,4,3 and 9 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 86439-83:
(7*8)+(6*6)+(5*4)+(4*3)+(3*9)+(2*8)+(1*3)=170
170 % 10 = 0
So 86439-83-0 is a valid CAS Registry Number.

86439-83-0Relevant articles and documents

Thermolabile Hydrocarbons, XVIII. 1-Substituted Neopentyl radicals and their Dimers

Eichin, Karl-Heinz,Beckhaus, Hans-Dieter,Hellmann, Siegried,Fritz, Hans,Peters, Eva-Maria,et al.

, p. 1787 - 1821 (2007/10/02)

Five 3,4-diaryl-2,2,5,5-tetramethylhexanes 1a - e were prepared as pure meso- and DL-isomers.According to the NMR spectra, x-ray analyses for meso- and DL-1e (with an (FB)2E conformation as energy minimum for DL-1e), and force field calculations the diastereomers have distinctly different minimum energy conformations, rotational potentials, and strain enthalpies.Also the activation parameters for the thermal dissociation into 1-arylneopentyl radicals 2 are typically differing.From an entropy discussion it is concluded that sandwich-like diastereomeric radical complexes are formed in these reactions as first intermediates.Their tightness influences ΔS%.The recombinations of the radicals 2 likewise take place stereoselectively.Their substituent effects on the selectivity can also be understood by primary formation of diastereomeric complexes of radical pairs.

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