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4808-04-2

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4808-04-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4808-04-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,8,0 and 8 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 4808-04:
(6*4)+(5*8)+(4*0)+(3*8)+(2*0)+(1*4)=92
92 % 10 = 2
So 4808-04-2 is a valid CAS Registry Number.

4808-04-2Relevant articles and documents

Palladium-catalyzed coupling reaction of an enol nonaflate with (vinyl)tributylstannanes and acetylenes: A highly stereoselective synthesis of 8,18-13C2-labeled retinal

Wada, Akimori,Ieki, Yasuhiro,Nakamura, Saeko,Ito, Masayoshi

, p. 1581 - 1588 (2007/10/03)

Here we report that enol nonaflates exhibit higher reactivity than the corresponding enol triflates in palladium-catalyzed cross-coupling reactions with various (vinyl)tributylstannanes and acetylenes. We also highlight the reaction of a vinyl nonaflate,

Preparation of 11,14-epoxy-bridged and isomeric chain-demethylated retinals. 13-Demethyl-11,14-epoxy-, 9-demethyl-, 13-demethyl- and 9,13-bisdemethyl-retinals

Broek, A. D.,Muradin-Szweykowska, M.,Courtin, J. M. L.,Lugtenburg, J.

, p. 46 - 51 (2007/10/02)

9-Cis- and all-trans-13-demethyl-11,14-epoxyretinyl acetate were prepared via a Wittig coupling between β-ionylidenetriphenylphosphonium bromide (1) and 5-(acetoxymethyl)furfural.Saponification of these acetates, subsequent oxidation and HPLC separation a

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