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80698-36-8

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80698-36-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 80698-36-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,0,6,9 and 8 respectively; the second part has 2 digits, 3 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 80698-36:
(7*8)+(6*0)+(5*6)+(4*9)+(3*8)+(2*3)+(1*6)=158
158 % 10 = 8
So 80698-36-8 is a valid CAS Registry Number.

80698-36-8Downstream Products

80698-36-8Relevant articles and documents

(Carbomethoxy)maleic Anhydride, a Highly Reactive New Dienophile and Comonomer

Hall, H. K.,Nogues, P.,Rhoades, J. W.,Sentman, R. C.,Detar, M.

, p. 1451 - 1455 (1982)

(Carbomethoxy)maleic anhydride (CMA), is an extremely reactive dienophile in cycloadditions with butadiene, isoprene, and chloroprene.The second-order rate constants prove it to be more reactive than tetracyanoethylene.Diels-Alder reaction with anthracene gives the normal addition product.With cyclopentadiene, the endo adduct is obtained and with furan the exo adduct.With p-metoxystyrene, anethole, and diphenylethylene, the 2:1 Wagner-Jauregg-type adducts are obtained, while with styrene both Wagner-Jauregg and Diels-Alder ene adduct are formed.Copolymers form in certain conditions.With isobutyl and phenyl vinyl ether, an inverse-lectron-demand Diels-Alder reaction with CMA yields 2-isobutoxy- or 2-phenoxy-6-methoxy-3,4-dihydro-2H-pyran-3,4-dicarboxylic anhydride.These labile dihydropyrans revert to copolymers.

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