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56579-60-3

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56579-60-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 56579-60-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,6,5,7 and 9 respectively; the second part has 2 digits, 6 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 56579-60:
(7*5)+(6*6)+(5*5)+(4*7)+(3*9)+(2*6)+(1*0)=163
163 % 10 = 3
So 56579-60-3 is a valid CAS Registry Number.

56579-60-3Relevant articles and documents

Evolution of structure and reactivity in a series of iconic carbenes

Zhang, Min,Moss, Robert A.,Thompson, Jack,Krogh-Jespersen, Karsten

, p. 843 - 850 (2012)

We present experimental activation parameters for the reactions of six carbenes (CCl2, CClF, CF2, ClCOMe, FCOMe, and (MeO) 2C) with six alkenes (tetramethylethylene, cyclohexene, 1-hexene, methyl acrylate, acrylonitrile, and α-chloroacrylonitrile). Activation energies range from -1 kcal/mol for the addition of CCl2 to tetramethylethylene to 11 kcal/mol for the addition of FCOMe to acrylonitrile. A generally satisfactory analysis of major trends in the evolution of carbenic structure and reactivity is afforded by qualitative applications of frontier molecular orbital theory, although the observed entropies of activation appear to fall in a counterintuitive pattern. An analysis of computed cyclopropanation transition state parameters reveals significant nucleophilic selectivity of (MeO)2C toward α-chloroacrylonitrile.

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