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α-<2H1>p-xylene, also known as para-xylene-2,2-d1, is a deuterated derivative of para-xylene, an aromatic hydrocarbon. It consists of a benzene ring with two methyl groups attached to the para positions (opposite sides) and a deuterium atom (2H1) replacing one hydrogen atom on the benzene ring. α-<2H1>p-xylene is used as a stable isotope-labeled internal standard in various analytical techniques, such as gas chromatography and mass spectrometry, for the quantification and identification of para-xylene in complex mixtures. Due to its unique properties, α-<2H1>p-xylene plays a crucial role in the chemical industry, particularly in the production of plastics, resins, and synthetic fibers.

16766-53-3

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16766-53-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 16766-53-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,7,6 and 6 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 16766-53:
(7*1)+(6*6)+(5*7)+(4*6)+(3*6)+(2*5)+(1*3)=133
133 % 10 = 3
So 16766-53-3 is a valid CAS Registry Number.

16766-53-3Downstream Products

16766-53-3Relevant academic research and scientific papers

Preliminary investigations on the catalytic hydrogenation of polycyclic aromatic hydrocarbons via WGSR

Chen, Dabo,Gu, Jiale,Huang, Sheng,Li, Huan,Wu, Shiyong,Wu, Youqing

, (2021/10/04)

The water-gas shift reaction (WGSR) is a crucial reaction in the direct liquefaction of lignite in a syngas (CO + H2) system. In this study, anthracene was utilized as a polycyclic model compound of lignite, to which hydrogen is donated by the H2/D2 produced from CO and H2O/D2O via the WGSR. The results show that the model compound of the polycyclic aromatic hydrocarbon in coal (anthracene) undergoes partial cracking and polycondensation under non-hydrogen-donor conditions at 400 °C. In addition, WGSR catalyzed by NiO can generate hydrogen for the hydrogenation of anthracene. Comparing the mass spectra of deuterated products with those of conventional hydrogenation products by isotope labeling, the alkyl side chain positions of toluene, 1,4-xylene, methylnaphthalene, 1,1-diphenylethylene, methylanthracene and other compounds are prone to deuteration, enabling speculation of the main hydrogenation route of anthracene, which provides theoretical support for the catalytic hydrogenation in direct liquefaction of lignite in a syngas (CO + H2) system.

Method for preparing deuterated compound through decarboxylation and deuteration of carboxylic acid

-

Paragraph 0060; 0062-0063, (2021/06/13)

The invention relates to a method for preparing a deuterated compound through decarboxylation and deuteration of carboxylic acid. According to the method, a carboxylic acid compound is used as a raw material, hydrogen atoms of carboxylate radicals are exc

Novel preparation of N-arylmethyl-N-arylmethyleneamine N-oxides from benzylic bromides with zinc and isobutyl nitrite

Yanai, Kei,Togo, Hideo

, p. 3523 - 3529 (2019/05/24)

Treatment of benzylic bromides with Zn and LiCl, followed by the reaction with i-butyl nitrite gave N-arylmethyl-N-arylmethyleneamine N-oxides in moderate yields. The present reaction is a novel and simple method for the preparation of nitrones from benzylic bromides, although the yields are moderate.

Chemical pressure effect by selective deuteration in the molecular-based conductor, 2,5-dimethyl-N,N'-dicyano-p-benzoquinone immine-copper salt, (DMe-DCNQI)2Cu

Aonuma, Shuji,Sawa, Hiroshi,Kato, Reizo

, p. 1541 - 1550 (2007/10/02)

The mixed-valence copper salt of DMe-DCNQI91, where DMe-DCNQI=2,5-dimethyl-N,N'-dicyano-p-benzoquinone diimine) is a molecular conductor whose electrical and magnetic properties are quite sensitive to pressure.We have performed selective deuteriation of the molecule 1.By control of the position and number of deuterium atoms, the low-pressure region (ca. 500 bar) in the pressure-temperature phase diagram of (1)2Cu was reproduced at ambient pressure.The equivalency of the deuteriation and pressure effects is explained from steric origins; 'contraction' aroused by the slightly shorter C-D bond (steric isotope effect) and 'constriction' by pressure.

Side Chain Hydroxylation of Aromatic Compounds by Fungi. Part 4. Influence of the para Substituent on Kinetic Isotope Effects During Benzylic Hydroxylation by Mortierella isabellina

Holland, Herbert L.,Brown, Frances M.,Conn, Morgan

, p. 1651 - 1655 (2007/10/02)

The benzylic hydroxylation of a series of para-substituted toluenes by the fungus Mortierella isabellina has been studied by using CD3, CHD2, and CH2D methyl labelled substrates.Inter- and intramolecular primary and secondary deuterium kinetic isotope effect ratios have been determined: the intermolecular primary effects are maximal with strongly electron-withdrawing para substituents (R = CN and CF3), while the intramolecular primary effects are minimal for R = H but increase in instances where R is electron donating or withdrawing.These results are interpreted in terms of a dependence of the hydroxylation mechanism on the nature of the para substituent.

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