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81278-75-3

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81278-75-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81278-75-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,2,7 and 8 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 81278-75:
(7*8)+(6*1)+(5*2)+(4*7)+(3*8)+(2*7)+(1*5)=143
143 % 10 = 3
So 81278-75-3 is a valid CAS Registry Number.

81278-75-3Downstream Products

81278-75-3Relevant academic research and scientific papers

o-Naphthoquinodimethanes and o-Phenanthroquinodimethanes. Isoindene-Related Species

Dolbier, William R.,Dulcere, Jean-Pierre,Sellers, Simon F.,Koroniak, Henryk,Shatkin, Blane T.,Clark, Thomas L.

, p. 2298 - 2303 (1982)

Three isoindene-related naphthoquinodimethane and phenanthroquinodimethane species were synthesized and trapped with 4-phenyl-1,2,4-triazoline-3,5-dione.They are 2,2-dimethyl-2H-benzindene (3), 2,2-dimethyl-2H-benzindene (4), and 2,2-dimethyl-9H-cyclopentaphenanthrene (10).Compound 3 could be isolated and characterized by 1H NMR.The effect of solvent on the bisacylation of naphthalene and phenanthrene by dimethylmalonyl chloride is discussed.Also the use of the Vilsmeier reagent generated from PBr3/DMF if highly recommended as a general reagent for conversion of alcohols to alkyl bromides.

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