Category: 34413-35-9

On March 29, 1996, Remberg, B.; Nikiforov, A.; Buchbauer, G. published an article.Category: quinoxaline The title of the article was Kovats’ indices of pyrazines and related flavor substances on methyl silicone and Carbowax 20M phases. And the article contained the following:

Gas-chromatog. retention indexes (Kovats’ indexes) of 77 com. available flavor-relevant heterocyclic compounds (pyrazines, pyridines, pyrroles, quinoxalines, and thiazoles) were determined in temperature programmed mode on Me silicone and Carbowax 20M phases as an aid for their identification. The experimental process involved the reaction of 5,6,7,8-Tetrahydroquinoxaline(cas: 34413-35-9).Category: quinoxaline

The Article related to flavor heterocyclic retention index gas chromatog, Food and Feed Chemistry: Analysis and other aspects.Category: quinoxaline

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Quinoxaline – Wikipedia,
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On November 20, 2014, Zhou, Bin; Ren, Hong-tao published an article.Formula: C8H10N2 The title of the article was Effect of different roast degree on aroma quality of Coffea arabica in Yunnan Province. And the article contained the following:

The Coffea arabica in Yunnan Province has good quality. There are two reactions during roasting: maillard reaction and carnmel reaction. For study the change of aroma quality of Coffea during roasting, the aromatic constituents of light roast Coffea, medium roast Coffea and dark roast Coffea in Yunnan province were isolated by simultaneous distillation extraction and identified by GC-MS method. Studying the qual. and quant. results of the aromatic constituents of the Coffea arabica in Yunnan Province which roasting different roast degree. The result showed that different roast degree can effect the Coffea aroma. The experimental process involved the reaction of 5,6,7,8-Tetrahydroquinoxaline(cas: 34413-35-9).Formula: C8H10N2

The Article related to roast aroma coffea, Food and Feed Chemistry: Analysis and other aspects.Formula: C8H10N2

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On January 19, 2022, Zhu, Ze-Lin; Wang, Sheng-Fu; Fu, Li-Wen; Tan, Ji-Hua; Cao, Chen; Yuan, Yi; Yiu, Shek-Man; Zhang, Ye-Xin; Chi, Yun; Lee, Chun-Sing published an article.Computed Properties of 34413-35-9 The title of the article was Efficient Pyrazolo[5,4-f]quinoxaline Functionalized Os(II) Based Emitter with an Electroluminescence Peak Maximum at 811 nm. And the article contained the following:

Upon fusing the pyrazinyl pyrazole entity in giving pyrazolo[3,4-f]quinoxaline chelate, the corresponding Os(II) based NIR emitter exhibited “invisible” and efficient electroluminescence with a peak maximum at 811 nm. A maximum external quantum efficiency of 0.97 % and a suppressed efficiency roll-off till a c.d. of 300 mA cm-2 was also exhibited. The experimental process involved the reaction of 5,6,7,8-Tetrahydroquinoxaline(cas: 34413-35-9).Computed Properties of 34413-35-9

The Article related to osmium complex organic light emitting diode electroluminescence, 800 nm, near-infrared, organic light-emitting diodes, osmium(ii) complex, pyrazolo[5,4-f]quinoxaline, Placeholder for records without volume info and other aspects.Computed Properties of 34413-35-9

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Quinoxaline – Wikipedia,
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On March 31, 2004, Baker, Richard R.; Bishop, Louise J. published an article.Application of 34413-35-9 The title of the article was The pyrolysis of tobacco ingredients. And the article contained the following:

Relationships between tobacco components and smoke products are complex and often difficult to unravel. Pyrolysis experiments have commonly been used to establish such relationships. However, unless they are performed under dynamic conditions that are relevant to those that occur during tobacco burning, results can be obtained which have little resemblance to those obtained during cigarette smoking. The relevance of pyrolysis experiments to the behavior of tobacco ingredients in a burning cigarette is considered. Based on the temperature, heating rate, oxygen levels and gas flow conditions that occur inside the burning zone of a cigarette, together with a review of relevant pyrolysis and smoking experiments, a set of pyrolysis conditions has been developed that approximates those occurring in the pyrolysis region of the burning cigarette. The conditions include heating the sample at 30° s-1 from 300 to 900° under a flow of 9% oxygen in nitrogen. Experiments on the pyrolytic behavior of eleven relatively volatile substances under these conditions give results that are in good agreement with results from thirteen published studies in which cigarettes incorporating labeled versions of the substances were smoked. Subsequently, 291 single-compound tobacco ingredients have been pyrolyzed under this set of conditions, most of which are relatively volatile. This enables the behavior of these ingredients in a burning cigarette to be estimated in terms of intact transfer to mainstream smoke vs. pyrolytic decomposition It is predicted that almost a third of the substances would transfer to mainstream smoke at least 99% intact, and almost two-thirds would transfer 95% intact. Where pyrolytic decomposition does occur, the products are listed together with an estimate of the levels in smoke that would arise from the ingredient. The experimental process involved the reaction of 5,6,7,8-Tetrahydroquinoxaline(cas: 34413-35-9).Application of 34413-35-9

The Article related to cigarette tobacco pyrolysis volatile substance decomposition, Mammalian Pathological Biochemistry: Oncology and other aspects.Application of 34413-35-9

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Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider

Wu, Yizi; Wei, Weiwei; Yang, Huawu; Chen, Zengping; Zou, You; Li, Yanchun; Tuo, Suxing; Yin, Shuangfeng; Zhong, Kejun published an article in 2018, the title of the article was Gas chromatography-mass spectrometry data analysis algorithm based on sparse model and its application in resolving severely overlapped peaks.Formula: C8H10N2 And the article contains the following content:

A gas chromatog.-mass spectrometry (GC-MS) data anal. algorithm is proposed. The mass spectrum at the top of the chromatog. peak is the spectrum to be solved. A certain amount of related reference spectra is retrieved from the spectral library, and then, the equation of the chromatog. response value of each pure component is solved. A step-by-step strategy is used for the mass spectra retrieval. Firstly, an efficient indexing technol. is used for rough selection, and then, the “strong peak out with high probability” and the “extrusion” rules are used to exclude more unrelated mass spectra. A regression algorithm based on a sparse model is proposed to solve the equation of the chromatog. response value. Compared with the traditional algorithm, this algorithm can extract the main structure of the spectrum to be solved, and avoid over-fitting. The exptl. results show that the proposed algorithm has a higher accuracy and smaller residual reference spectrum set, and the sparse model achieves satisfactory exptl. results in the anal. of severely overlapped peaks. The proposed method provides an effective solution for resolving overlapped peaks, especially severely overlapped peaks, in GC-MS data. The experimental process involved the reaction of 5,6,7,8-Tetrahydroquinoxaline(cas: 34413-35-9).Formula: C8H10N2

The Article related to gc ms data analysis algorithm, gas chromatography-mass spectrometry (gc-ms), mass spectrometry retrieval, severely overlapped peaks, sparse model, Organic Analytical Chemistry: Determinations and other aspects.Formula: C8H10N2

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Quinoxaline – Wikipedia,
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On May 27, 2022, Scattolin, Thomas; Gharbaoui, Tawfik; Chen, Cheng-yi published an article.Application of 34413-35-9 The title of the article was A Nucleophilic Deprotection of Carbamate Mediated by 2-Mercaptoethanol. And the article contained the following:

Carbamates, typically used for the protection of amines, including Cbz, Alloc, and Me carbamate, was readily deprotected by treatment with 2-mercaptoethanol in the presence of potassium phosphate tribasic in N,N-dimethylacetamide at 75°C. This nucleophilic deprotection protocol was superior to the standard hydrogenolysis or Lewis acid-mediated deprotection conditions for substrates bearing a functionality sensitive to these more traditional methods. The experimental process involved the reaction of 5,6,7,8-Tetrahydroquinoxaline(cas: 34413-35-9).Application of 34413-35-9

The Article related to carbamate mercaptoethanol nucleophilic deprotection, secondary amine preparation, General Organic Chemistry: Synthetic Methods and other aspects.Application of 34413-35-9

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Quinoxaline – Wikipedia,
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Chau, Le T. M.; Thang, Tran D.; Diep, Le V.; Tu, Nguyen T. M.; Ogunwande, Isiaka A. published an article in 2014, the title of the article was Constituents of some essential oil bearing plants from Vietnam.Product Details of 34413-35-9 And the article contains the following content:

Essential oils obtained from hydrodistillation of three medicinal plants grown in Vietnam were analyzed by gas chromatog. (GC) and gas chromatog./mass spectrometry (GC-MS). The monoterpene hydrocarbons, α-pinene (50.2%), β-pinene (23.6%) and limonene (5.3%) were the most abundant constituents of the rhizome oil of Zingiber collinsii Mood & Theilade (Zingiberaceae). The main compounds of the stem oil of Croton kongensis Gagnep., (Euphorbiaceae) were benzyl benzoate (12.7%), β-selinene (9.8%), bulnesol (8.0%) and 5,6,7,8-tetrahydroquinoxaline (7.4%). The leaf oil of Goniothalamus albiflorus Ban., consisted mainly of α-pinene (26.2%), caryophyllene oxide (10.6%) and 1,8-cineole (9.7%). The composition of the oils of Zingiber collinsii and Croton kongensis was being reported for the first time. The experimental process involved the reaction of 5,6,7,8-Tetrahydroquinoxaline(cas: 34413-35-9).Product Details of 34413-35-9

The Article related to zingiber croton goniothalamus essential oil monoterpene hydrocarbon, Plant Biochemistry: Composition and Products and other aspects.Product Details of 34413-35-9

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Quinoxaline – Wikipedia,
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On May 15, 2006, Li, Na; Zou, Jiankai published an article.SDS of cas: 34413-35-9 The title of the article was Determination of impurities in industrial caprolactam produced from toluene by SPME and GC-MS. And the article contained the following:

Solid-phase microextraction (SPME) in combination with gas chromatog.-mass spectrometry (GC-MS) was applied to study the impurities in industrial caprolactam produced from toluene. Various nitriles, lactones, amides, and alcs. were detected to be the main impurities in caprolactam products. Trace amounts of heterocyclic compounds, which had great effects on the quality of caprolactam, were also successfully detected. Those were pyrrole, 2-ethyl-3-Me pyrazine, 5,6,7,8-tetrahydroquinoxaline, quinoxaline, 2,3-di-Me quinoxaline, 2-pyridinamide, etc. The effects of some impurities on caprolactam quality and the polymerization of caprolactam as well as the possible origin of the main impurities are also discussed. This could be of great importance to the industrial purity control of caprolactam. The experimental process involved the reaction of 5,6,7,8-Tetrahydroquinoxaline(cas: 34413-35-9).SDS of cas: 34413-35-9

The Article related to caprolactam impurity analysis solid phase microextraction gc ms, Organic Analytical Chemistry: Determinations and other aspects.SDS of cas: 34413-35-9

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Quinoxaline – Wikipedia,
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On August 27, 2008, Du, Zhizhi; Clery, Robin A.; Hammond, Christopher J. published an article.Category: quinoxaline The title of the article was Volatile Organic Nitrogen-Containing Constituents in Ambrette Seed Abelmoschus moschatus Medik (Malvaceae). And the article contained the following:

A detailed investigation of the basic fraction of a CO2 extract of ambrette seeds (Abelmoschus moschatus) revealed a total of 58 nitrogen-containing compounds The identification of these compounds was carried out by GC-MS and NMR. All the identified nitrogen-containing compounds are reported here for the first time in ambrette seeds. Among these are 27 pyrazine derivatives and 12 pyridines, including the tentative identification of four new natural compounds, 1-(6-ethyl-3-hydroxypyridin-2-yl)ethanone (1), 1-(3-hydroxy-5,6-dimethylpyridin-2-yl)ethanone (2), 1-(3-hydroxy-6-methylpyridin-2-yl)ethanone (3), and 1-(3-hydroxy-5-methylpyridin-2-yl)ethanone (4). The odor of the basic fraction was assumed to be due to these pyrazines and pyridines and also the presence of seven thiazoles. The odors described suggest that these N-compounds contribute to what is described in perfumery terms as the “natural and rounded” character of the ambrette extract The experimental process involved the reaction of 5,6,7,8-Tetrahydroquinoxaline(cas: 34413-35-9).Category: quinoxaline

The Article related to abelmoschus extract nitrogenous compound pyrazine pyridine, Plant Biochemistry: Composition and Products and other aspects.Category: quinoxaline

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On February 25, 2014, Lu, Chiyu; Shi, Jiahao; Li, Shaoqin published an article.Electric Literature of 34413-35-9 The title of the article was Fumigation activities of 13 kinds of essential oils and anethole against the adult of Tribolium castaneum (Herbst). And the article contained the following:

On the condition of dosage of 20 μL/L, the fumigation effects of 13 kinds of essential oils against the adult of Tribolium castaneum (Herbst) were studied. The results showed that the effect of Illicium verum oil was better than that of the other essential oils. The mortality rate reached 100% under the 24 h exposure. The results of fumigation toxicity of Illicium verum oil against adults showed as follows: with the extension of exposure time, the fumigation effect enhanced significantly. When fumigation time increased from 12 h to 72 h, the LC50 decreased from 13.88 μL/L to 5.08 μL/L. Then 21 kinds of ingredients from Illicium verum oil were found by GC-MS; the main component was anethole, and the relative content was 79.81%. The fumigation toxicity results of anethole against adults showed an increase of the fumigation time from 12 h to 72 h; and the LC50 decreased from 7.76 μL/L to 3.36 μl/L. The LC50 of anethole was lower than that of Illicium verum oil. The fumigation effect of anethole against Tribolium castaneum adult was stronger than that of Illicium verum oil. The experimental process involved the reaction of 5,6,7,8-Tetrahydroquinoxaline(cas: 34413-35-9).Electric Literature of 34413-35-9

The Article related to tribolium essential oil anethole adult fumigation activity illicium, Agrochemical Bioregulators: Invertebrate and other aspects.Electric Literature of 34413-35-9

Referemce:
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