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3,4,5,6,7,8,9,10-Octamethylpentacyclo<4.4.0.02,5.03,8.04,7>dec-9-en-1,2-dicarbonsaeure-dimethylester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

118920-90-4

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118920-90-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 118920-90-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,8,9,2 and 0 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 118920-90:
(8*1)+(7*1)+(6*8)+(5*9)+(4*2)+(3*0)+(2*9)+(1*0)=134
134 % 10 = 4
So 118920-90-4 is a valid CAS Registry Number.

118920-90-4Downstream Products

118920-90-4Relevant academic research and scientific papers

Valence Isomerizations, 18. - Valence Isomerizations of Persubstituted (CH)10 Systems

Maier, Guenther,Wiegand, Norbert Hermann,Baum, Stefan,Wuellner, Reinhold

, p. 781 - 794 (2007/10/02)

Within the synthesis of persubstituted dihydronaphthalenes, altogether nineteen octamethylbis(methoxycarbonyl)-substituted valence isomers have been isolated, and their structures and mutual relationships clarified.Compared to the unsubstituted parent compounds, there are remarkable differences.The same is true for seven valence-isomeric forms of permethylated (CH)10 hydrocarbons which correspond to diesters and are also presented in this article. - Keywords: Persubstituted (CH)10 systems / Photochemical and thermal isomerizations / Steric crowding / Valence isomerizations

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