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53039-57-9

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53039-57-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 53039-57-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,3,0,3 and 9 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 53039-57:
(7*5)+(6*3)+(5*0)+(4*3)+(3*9)+(2*5)+(1*7)=109
109 % 10 = 9
So 53039-57-9 is a valid CAS Registry Number.

53039-57-9Downstream Products

53039-57-9Relevant articles and documents

Electron-Transfer Reactions in Organic Chemistry. 4. A Mechanistic Study of the Oxidation of p-Methoxytoluene by 12-Tungstocobalt(III)ate Ion

Eberson, Lennart

, p. 3192 - 3199 (1983)

A kinetic study of the oxidation of p-methoxytoluene by the heteropolyion 12-tungstocobalt(II)ate (CoIIIW12O405-) in acetic acid/water with an acetate salt present has been performed.The rate of disappearance of the cobalt species is

New methodology for the N-alkylation of 2-amino-3-acylthiophenes

Aurelio, Luigi,Flynn, Bernard L.,Scammells, Peter J.

, p. 4886 - 4902 (2011/08/06)

2-Amino-3-acylthiophenes are known to allosterically modulate the A 1 adenosine receptor and are also used as intermediates in the synthesis of therapeutic agents and pharmacophores such as thienoazepines and thienopyrimidines. The N-alkylation

Tin exchanged heteropoly tungstate: An efficient catalyst for benzylation of arenes with benzyl alcohol

Ramesh Kumar, Ch.,Rao, K.T. Venkateswara,Sai Prasad,Lingaiah

experimental part, p. 17 - 24 (2011/04/21)

The partial exchange of tin with the protons of 12-tungstophosphoric acid (TPA) results in a highly active heterogeneous catalyst for benzylation of arenes with benzyl alcohol as benzylating agent. The catalysts were characterized by X-ray diffraction, Laser-Raman and FT-IR of pyridine adsorption. The catalytic activity depends significantly on the extent of tin exchanged with the protons of heteropoly tungstate. The characterization results suggest the presence of Lewis acidic sites by the exchange of tin. The catalyst with partial exchange of Sn showed high benzylation activity, which in turn related to variation in acidity of the catalysts. The catalyst is highly active for benzylation reaction irrespective of the nature of substituted arenes and benzyl alcohols. These catalysts are highly active compared to other acid catalysts used for benzylation of different arenes. The catalyst is easy to separate from reaction mixture and exhibit consistent activity upon reuse. The plausible reaction mechanism based on the role of both Lewis and Bronsted acid sites of the catalyst was discussed.

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