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142743-58-6

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142743-58-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 142743-58-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,7,4 and 3 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 142743-58:
(8*1)+(7*4)+(6*2)+(5*7)+(4*4)+(3*3)+(2*5)+(1*8)=126
126 % 10 = 6
So 142743-58-6 is a valid CAS Registry Number.

142743-58-6Downstream Products

142743-58-6Relevant articles and documents

New Studies Concerning the Reactivity of Formaldehyde Oxide, Acetaldehyde Oxide, and Propionaldehyde Oxide

Reiser, Ralf,Sueling, Carsten,Schroeder, Gerhard

, p. 2493 - 2502 (2007/10/02)

Reactivity and selectivity of formaldehyde oxide (1a), acetaldehyde oxide (1b), and propionaldehyde oxide (1c) is tested by adding a cooled solution of one or two dipolarophiles to a solution of the primary ozonides of the olefins 2a, 2b or the ketene acetals 7a-c, respectively.Different selectivities are observed for the different carbonyl oxides.Only 1a is able to react with non-activated olefins like methylenecyclopentane (4a), norbornene (4b), 3-methylstyrene (4c), and cyclopentadiene (4d) under these conditions.Activated olefins turn out to be good quenchers for 1a.Both 1a and 1b react with fulvene 4e in completely different ways.Contrary to 1a, the carbonyl oxides 1b and 1c clearly prefer carbonyl compounds to activated olefins. Key Words: Ozonolysis / Carbonyl oxides / Ketene acetals / 1,2-Dioxolanes / Ozonides, primary

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