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5385-28-4

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5385-28-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 5385-28-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,3,8 and 5 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 5385-28:
(6*5)+(5*3)+(4*8)+(3*5)+(2*2)+(1*8)=104
104 % 10 = 4
So 5385-28-4 is a valid CAS Registry Number.

5385-28-4Relevant articles and documents

Photochemically generated bicyclic ortho-quinodimethanes: Photo- enolization of bicyclic aldehydes and ketones

Connolly, Terrence J.,Durst, Tony

, p. 15969 - 15982 (2007/10/03)

A photoenolization route to bicyclic ortho-quinodimethanes was investigated. Bicyclic photoenols were trapped in an intermolecular fashion with various dienophiles for the first time. All ortho-quinodimethane precursors were prepared via a selective route commencing with 1-indanol, α- tetralol and 1-benzosuberone. Irradiation afforded the E-photoenols exclusively which were trapped with equal efficiency except that derived from indane-4-carboxaldehyde. This low efficiency has been ascribed to rapid auto- oxidation of the aldehyde to carboxylic acid. The facial selectivity of the reaction between the photoenol from benzosuberan-9-carboxaldehyde and dimethyl fumarate was much lower when compared to the other aldehydes in this study. A distorted diene caused by the presence of the seven membered ring explains these results.

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