Month: November 2022

Gu, Junping; Tao, Hong; Wang, Junxia; Chen, Senlin; Ouyang, Lusi; Lin, Baomin; Lu, Jiajian published an article in 2021, the title of the article was Effects of cigarette filter design on release behavior of monomer flavor in breakable capsule.Category: quinoxaline And the article contains the following content:

In order to investigate the influences of cigarette filter design on the release of monomer flavor components in breakable capsules, the effects of capsule location in filter and filter ventilation on the transfer rates and puff-by-puff releases of 40 representative monomer flavor components in mainstream cigarette smoke were analyzed. The results showed that: 1) Capsule location in filter and filter ventilation levels significantly affected the transfer rates of the aroma components. The transfer rates of the monomer aroma components were higher when the capsule was planted at 6 mm to the mouth end as compared to those at 18 mm, or when the filter was unventilated. With the increase of the mol. weight of flavor compound, the transfer rate ratios between the capsule planted at 6 mm and that at 18 mm of the same component in alc., ketone and ester homologues presented different variation trends. The transfer rate ratios when the filter was unventilated to that of ventilated of the same component in these homologues deceased. 2) The puff-by-puff releases and the puff-by-puff releases per unit TPM of monomer aroma components were higher when the capsule was planted at 6 mm than at 18 mm. The puff-by-puff releases were higher and the puff-by-puff releases per unit TPM were lower when the filter was unventilated than ventilated. 3) The releases of those aroma components with a lower b.p., such as Et hexanoate, Et heptanoate, 2-heptanone, 2-octanone and 1-pentanol, increased significantly at the fourth and fifth puffs. The experimental process involved the reaction of 5,6,7,8-Tetrahydroquinoxaline(cas: 34413-35-9).Category: quinoxaline

The Article related to cigarette filter alc ketone ester, cigarettes and other aspects.Category: quinoxaline

Referemce:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider

Walradt, John P.; Pittet, Alan O.; Kinlin, Thomas E.; Muralidhara, Ranya; Sanderson, Anne published an article in 1971, the title of the article was Volatile components of roasted peanuts.Application of 34413-35-9 And the article contains the following content:

Steam volatile components from roasted Spanish peanuts were fractionated by preparative gas chromatog. Individual fractions were analyzed on a Carbowax 20M gas chromatog. column coupled to a mass spectrometer. Compounds reported for the first time from roasted peanuts include phenols, pyrazines, thiazoles, pyridines, aromatic hydrocarbons, and terpenes. 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 peanut volatile component, chromatog volatiles peanut, arachis hypogaea, peanut, phenols, terpenes role: anst (analytical study), volatile substances and other aspects.Application of 34413-35-9

Referemce:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider

Li, Qian; Duan, Zheng-kang; Luo, He-an; Yao, Yuan-yuan published an article in 2016, the title of the article was Analysis of solvent extracts from coal with gas chromatography-mass spectrometry.Related Products of 34413-35-9 And the article contains the following content:

Shanxi coal was extracted with acetone, DMF, cholamine and ethylenediamine by soxhlet extraction and stirring extraction, resp. With ethylenediamine as the solvent and using simple stirring extraction, the extraction yield was up to 17.1%. A gas chromatog.-mass spectrometry (GC/MS) method for determination of ethylenediamine extracts and cholamine extracts was developed. The results showed that 53 organic species were identified from the ethylenediamine extracts, and they can be classified into four groups components: arenes, aliphatic hydrocarbons, nitrogen compounds and oxygen compounds The nitrogen compounds are the most abundant compounds of which relative contents of area normalization is 75.64%. Compared with the detected species of ethylenediamine extracts, the detected species of cholamine extract is less, and the components of cholamine extract are different from that of ethylenediamine extract The experimental process involved the reaction of 5,6,7,8-Tetrahydroquinoxaline(cas: 34413-35-9).Related Products of 34413-35-9

The Article related to solvent extract coal gas chromatog mass spectrometry, coal role: amx (analytical matrix), anst (analytical study), gas chromatography-mass spectrometry role: pep (physical, engineering or chemical process), prp (properties), proc (process), solvent extraction role: pep (physical, engineering or chemical process), prp (properties), proc (process) and other aspects.Related Products of 34413-35-9

Referemce:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider

Kinlin, Thomas E.; Muralidhara, Ranya; Pittet, Alan O.; Sanderson, Anne; Walradt, John P. published an article in 1972, the title of the article was Volatile components of roasted filberts.COA of Formula: C8H10N2 And the article contains the following content:

Roasted filbert volatiles were isolated using the following techniques: steam distillation followed by solvent extraction; condensation of volatiles given off during steam distillation; and mol. distillation followed by fractionation using preparative gas chromatog. Extracts and fractions were analyzed using open tubular columns. 187 compounds are reported for the 1st time from roasted filbert volatiles including alkyl, alkenyl, oxygenated, and alicyclic pyrazines; pyrroles; pyridines; thiols, thiazoles, thiophenes, and sulfides; furans; phenols; acids; lactones; esters; terpenes; aromatic aldehydes, alkanals, 2-alkenals, and 2,4-alkadienals; aliphatic and olefinic alcohols and ketones; and aliphatic and aromatic hydrocarbons. The experimental process involved the reaction of 5,6,7,8-Tetrahydroquinoxaline(cas: 34413-35-9).COA of Formula: C8H10N2

The Article related to filbert roasted volatiles, Foods: Animal Origin and other aspects.COA of Formula: C8H10N2

Referemce:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider

Mussinan, Cynthia J.; Wilson, Richard A.; Katz, Ira published an article in 1973, the title of the article was Isolation and identification of pyrazines present in pressure-cooked beef.Safety of 5,6,7,8-Tetrahydroquinoxaline And the article contains the following content:

Flavor concentrations were isolated from beef cooked superatmospherically at 162.7.degree. by simultaneous steam distillation and continuous solvent extraction Separation and identification were accomplished by gas chromatog. and coupled gc-mass spectrometry. Mass spectral identifications were confirmed by IE values. A total of 33 pyrazines were identified. The experimental process involved the reaction of 5,6,7,8-Tetrahydroquinoxaline(cas: 34413-35-9).Safety of 5,6,7,8-Tetrahydroquinoxaline

The Article related to pyrazine compound cooked beef, flavor cone cooked beef, Foods: Animal Origin and other aspects.Safety of 5,6,7,8-Tetrahydroquinoxaline

Referemce:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider

Folkes, D. J.; Gramshaw, J. W. published an article in 1977, the title of the article was Volatile constituents of white bread crust.Product Details of 34413-35-9 And the article contains the following content:

A total of 190 volatile components were identified in essences prepared from white bread crust (in 20 cases the identification is provisional); of these compounds 97 have not previously been reported as constituents of white bread. A limited number only, of the compounds reported, may be partially responsible for the crusty notes present in bread aroma. 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 bread crust odor, Foods: Vegetable Origin and other aspects.Product Details of 34413-35-9

Referemce:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider

Vitzthum, O. G.; Werkhoff, P.; Hubert, P. published an article in 1975, the title of the article was Volatile components of roasted cocoa. Basic fraction.Category: quinoxaline And the article contains the following content:

Roasted cocoa volatiles were isolated using the following technique:extraction with supercritical CO2 under pressure followed by atm. steam distillation; adsorption on Porapak Q and subsequent extraction with purified diethylether; separation of the organic phase into basic and neutral fractions. Identification of basic cocoa aroma constituents was accomplished by mass spectrometry in combination with a 200m × 0.31 mm i.d. glass capillary column. For the 1st time 59 compounds are reported in roasted cocoa including alkyl-, alkenyl, acyl-, furyl- and alicyclic pyrazines, pyridines, quinoxalines, oxazoles, quinoline [91-22-5] and methyl o-aminobenzoate [134-20-3]. The CO2-extraction process described is generally applicable to studies on volatile aroma constituents in food odor research. The experimental process involved the reaction of 5,6,7,8-Tetrahydroquinoxaline(cas: 34413-35-9).Category: quinoxaline

The Article related to cocoa volatile compound, flavor compound cocoa, Foods: Vegetable Origin and other aspects.Category: quinoxaline

Referemce:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider

Malone, J. P.; McGimpsey, H. C. published an article in 1977, the title of the article was Fungicidal control of foliar diseases of barley in Northern Ireland.Formula: C8H10N2 And the article contains the following content:

Trials were carried out during 1971-74 in which 5 barley cultivars and 9 fungicides were employed for the control of mildew (Erysiphe graminis) and leaf blotch (Rhynchosporium secalis). The highest level of mildew was recorded in 1973 and of leaf blotch in 1972. All of the treatments used in 1973 reduced the level of mildew and several of them the level of leaf senescence, the best result being obtained with tridemorph [24602-86-6]. The treatment also increased grain yield and thousand (M) grain weight (benomyl [17804-35-2] and chlorquinox [9004-32-4] by ∼10%) but the differences between treatments were not significant. When the level of mildew was low, it was reduced by ethirimol [23947-60-6] seed treatment in 1971 and by all the treatments in 1974, but this did not significantly affect yield or M weight In 1971 and 1972 benomyl reduced the level of leaf blotch and in 1972 the level of leaf senescence. It also increased M weight in 1971, and both yield and M weight in 1972. The experimental process involved the reaction of 5,6,7,8-Tetrahydroquinoxaline(cas: 34413-35-9).Formula: C8H10N2

The Article related to barley erysiphe rhynchosporium fungicide, Agrochemicals: Microbial and other aspects.Formula: C8H10N2

Referemce:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider

On April 30, 2002, Adams, T. B.; Doull, J.; Feron, V. J.; Goodman, J. I.; Marnett, L. J.; Munro, I. C.; Newberne, P. M.; Portoghese, P. S.; Smith, R. L.; Waddell, W. J.; Wagner, B. M. published an article.Formula: C8H10N2 The title of the article was The FEMA GRAS assessment of pyrazine derivatives used as flavor ingredients. And the article contained the following:

A review. Elements that are fundamental to the safety evaluation of flavor ingredients include exposure, structural analogy, metabolism, pharmacokinetics and toxicol. Flavor ingredients are evaluated individually taking into account the available scientific information on the group of structurally related substances. Scientific data relevant to the safety evaluation of the use of pyrazine derivatives as flavoring ingredients is evaluated. The experimental process involved the reaction of 5,6,7,8-Tetrahydroquinoxaline(cas: 34413-35-9).Formula: C8H10N2

The Article related to review pyrazine flavor gras, Food and Feed Chemistry: Reviews and other aspects.Formula: C8H10N2

Referemce:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider

On November 30, 1983, Lewis, Susan J.; Mirrlees, Margaret S.; Taylor, Peter J. published an article.Synthetic Route of 62163-09-1 The title of the article was Rationalizations among heterocyclic partition coefficients. Part 2: The azines. And the article contained the following:

π-Values (partition substituent constants) of 246 azines are given and discussed in terms of Δπ, the difference in π-value from that expected for C6H6. It is shown that Δπ is close to zero for alkyl and most halogen groups, but for polar substituents capable of H bonding it may be as high as φ1.6. Except for peri-positions, these Δπ-values may be correlated by a set of equations specific for different types of substituent position and containing terms which sep. parameterize proton-donor and -acceptor ability. The rationale behind this treatment is justified in terms of the nature of the octanol-H2O partitioning process and the manner in which electronic effects are expected to operate, in this context and that of the individual mol. Other topics discussed include: reasons for deviations among “irregular” substituents; the special problems of peri-positions; multisubstitution; and some consequences of this anal. for other types of compound The experimental process involved the reaction of 5-Chloroquinoxaline(cas: 62163-09-1).Synthetic Route of 62163-09-1

The Article related to azine structure partition coefficient, lfer azine, Pharmacology: Structure-Activity and other aspects.Synthetic Route of 62163-09-1

Referemce:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider