Category: 638-02-8

PEG/PVDF membranes for separating organosulphur compounds from N-heptane: Effect pf PEG molecular weight was written by Hu, Wenling;Han, Xiaolong;Liu, Liangliang;Zhang, Xin;Xue, Juanqin;Wang, Baoyi;Zhang, Peng;Cao, Xingzhong. And the article was included in Canadian Journal of Chemical Engineering in 2017.Formula: C6H8S The following contents are mentioned in the article:

Polyethylene glycol (PEG) of three different mol. weights were used to prepared PEG/PVDF composite membranes for separating organosulphur compounds from n-heptane by pervaporation. All the composite membranes were characterized by Fourier transform IR spectroscopy (FTIR), SEM (SEM) X-ray diffraction (XRD) and positron annihilation spectroscopy (PAS). The effects of operating temperature, feed sulfur content and organosulphur species on performance of PEG/PVDF composite membranes with different mol. weights were investigated. When the feed organosulphur was thiophene, the fluxes decreased with an increase in PEG mol. weights, however, the enrichment factors were in the different order, PEG membrane with mol. weight of 35 000 exhibited highest enrichment factor of 12.59 for thiophene at 85 °C. When the feed organosulphur was 2-Methylthiophene or 2, 5-Dimethylthiophene, it was found that PEG membrane with mol. weight of 100 000 showed highest enrichment factor. The results showed that PEG mol. weights have a considerable effect on separation performance for pervaporation desulphurization. This article is protected by copyright. All rights reserved. This study involved multiple reactions and reactants, such as 2,5-Dimethylthiophene (cas: 638-02-8Formula: C6H8S).

2,5-Dimethylthiophene (cas: 638-02-8) belongs to benzothiophene derivatives. Benzothiophene is relatively a stable molecule. The core structure is a part of various pharmaceutical substances and natural products. It is found within the chemical structures of pharmaceutical drugs such as zileuton, raloxifene, and sertaconazole, and also BTCP.Formula: C6H8S

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Characterization of typical potent odorants in raw and cooked Toona sinensis (A. Juss.) M. Roem. by instrumental-sensory analysis techniques was written by Yang, Wenxi;Cadwallader, Keith R.;Liu, Yuping;Huang, Mingquan;Sun, Baoguo. And the article was included in Food Chemistry in 2019.Computed Properties of C6H8S The following contents are mentioned in the article:

Toona sinensis (A. Juss.) M. Roem. (TS) possesses a unique and pleasant flavor and is consumed as a popular seasonal vegetable in certain parts of eastern and southeastern Asia. The potent odorants in raw and cooked TS were identified by combined sensory and instrumental anal. techniques, including sensory descriptive aroma profiling and two complimentary volatile isolation methods combined with gas chromatog.-olfactometry (GC-O) techniques. Highly volatile odorants were determined by static headspace dilution anal. (SHDA)-GC-O, while those of intermediate- and semi-volatility were determined by solvent-assisted flavor evaporation-aroma extract dilution anal. (SAFE-AEDA). Among the numerous odorants identified by SHDA and SAFE-AEDA, (E,E)-bis-(1-propenyl) disulfide was found to be predominant in both raw and cooked TS. In agreement with results of sensory descriptive anal., hexanal, (Z)-3-hexenal, (E)-2-hexenal and (Z)-3-hexen-1-ol contributed green, grassy and leafy aroma notes; while hydrogen sulfide, Me thiirane, (E,E)-bis-(1-propenyl) disulfide and (E,Z)-bis-(1-propenyl) disulfide contributed pungent, sulfurous and alliaceous notes in TS. This study involved multiple reactions and reactants, such as 2,5-Dimethylthiophene (cas: 638-02-8Computed Properties of C6H8S).

2,5-Dimethylthiophene (cas: 638-02-8) belongs to benzothiophene derivatives. Benzothiophenes are valuable heterocycles that are widely used in medicines, agrochemicals, and materials science. It is also used in the manufacturing of dyes such as thioindigo.Computed Properties of C6H8S

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Elicitation of organosulfur bioactive compounds with Fe³⁺ and Zn²⁺ in cell suspension culture of single garlic (Allium sativum L.) was written by Setiowati, Frida Kunti;Widoretno, Wahyu;Prasetyawan, Sasangka;Lukiati, Betty. And the article was included in Farmacia (Bucharest, Romania) in 2022.Application of 638-02-8 The following contents are mentioned in the article:

Single garlic (Allium sativum L.) is an herbal plant that is rich in organosulfur compounds and widely used for the treatment in health problems such as high blood pressure, hypercholesterolemia, atherosclerosis and cancer. This study aims to investigate the different concentrations effect of Fe³⁺ and Zn²⁺ elicitor (0, 0.1, 0.2, 0.3, 0.4, 0.5 mM, resp.) in single garlic cell suspension culture. The formation of suspension culture was done by culturing the callus in Murashige and Skoog liquid medium. The HPLC anal. revealed the presence of 30 organosulfur compounds The Fe³⁺ and Zn²⁺ elicitors can increase the growth of cell suspension culture and production of organosulfur compounds The highest of fresh weight, dry weight, settled cell volume, growth index were produced in the medium augmented by 0.5 mM Fe³⁺ and 0.5 mM Zn²⁺, while organosulfur compounds increase with 0.3 mM Zn²⁺ (2-fold) and 0.5 mM Fe³⁺ (1.5-fold). The Fe³⁺ and Zn²⁺ metal ions are effective elicitors to increase the production of organosulfur bioactive compounds This study involved multiple reactions and reactants, such as 2,5-Dimethylthiophene (cas: 638-02-8Application of 638-02-8).

2,5-Dimethylthiophene (cas: 638-02-8) belongs to benzothiophene derivatives. Benzothiophene is used as starting material for the synthesis of bioactive molecules. The core structure is a part of various pharmaceutical substances and natural products. It is found within the chemical structures of pharmaceutical drugs such as raloxifene, zileuton, and sertaconazole, and also BTCP.Application of 638-02-8

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Analysis of pyrolysis liquids obtained from the slow pyrolysis of a German brown coal by comprehensive gas chromatography mass spectrometry was written by Rathsack, Philipp. And the article was included in Fuel in 2017.Product Details of 638-02-8 The following contents are mentioned in the article:

Due to the upcoming shortage of crude oil and natural gas, alternative resources for the production of chems. are needed and long-term research should be conducted. One of the future possible methods for the production of valuable chems. is the use of coal and its conversion by pyrolysis. During pyrolysis, macromol. organic compounds are decomposed into smaller compounds, which can be used. The development of these processes requires compositional knowledge of the products, which are very complex mixtures of organic compounds Pyrolysis liquids obtained in a fixed bed reactor at different pyrolysis temperatures between 400 and 700° is analyzed qual. and quant. by comprehensive gas chromatog. mass spectrometry (GC×GC-MS). More than thousand compounds were observed in each of the samples. Selected compound classes (alkanes, alkenes, alkylbenzenes, phenols, carboxylic acids and thiophenes) are discussed. Quantification results of 94 compounds are given, visualized and discussed in relation to the pyrolysis conditions. It is demonstrated, that the application of GC×GC-MS is highly beneficial for the anal. of pyrolysis liquids from coal. This study involved multiple reactions and reactants, such as 2,5-Dimethylthiophene (cas: 638-02-8Product Details of 638-02-8).

2,5-Dimethylthiophene (cas: 638-02-8) belongs to benzothiophene derivatives. Benzothiophene is relatively a stable molecule. The core structure is a part of various pharmaceutical substances and natural products. The different substitution patterns in these heterocycles offer new opportunities for drug discovery and other applications in materials science.Product Details of 638-02-8

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Synthesis and complexation behavior of 3,4-bis(chloromercurio)2,5-dimethylthiophene was written by Sa, Shreenibasa;Sathesh, Venkatesan;Murali, Anna Chandrasekar;Nayak, Prakash;Venkatasubbaiah, Krishnan. And the article was included in Journal of Organometallic Chemistry in 2021.Synthetic Route of C6H8S The following contents are mentioned in the article:

Synthesis of a new bidentate Lewis acid 3,4-bis(chloromercurio)2,5-dimethylthiophene (1) has been reported which is not accessible using other methods. Crystallization of compound 1 from a THF (THF) and DMSO (DMSO) results Lewis acid-nucleophile (Lewis base) adduct in 1:2 ratio such as C₆H₆SHg₂Cl₂•2THF (2) & C₆H₆SHg₂Cl₂•2DMSO (3) resp. The bifunctional Lewis acid on crystallization with Et₄NCl resulted in the formation of compound 4 {[(C₆H₆SHg₂Cl₂)₃Cl₂][Et₄N]₂}, which is a unique 3:2 adduct of compound 1 with chloride anion. Compounds 1–4 have been characterized by NMR, elemental anal., and X-ray crystallog. The solid state structures of compounds 1–4 reveals the existence of Hg•••Cl, C-H•••Cl weak interactions which lead to the formation of 1D, 2D and 3D supramol. structures. This study involved multiple reactions and reactants, such as 2,5-Dimethylthiophene (cas: 638-02-8Synthetic Route of C6H8S).

2,5-Dimethylthiophene (cas: 638-02-8) belongs to benzothiophene derivatives. Benzothiophenes are valuable heterocycles that are widely used in medicines, agrochemicals, and materials science. Due to its aromaticity, thiophenes do not exhibit the same properties as conventional thioethers.Synthetic Route of C6H8S

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Metabolomics Approaches for Analyzing Effects of Geographic and Environmental Factors on the Variation of Root Essential Oils of Ferula assa-foetida L was written by Karimi, Ali;Kraehmer, Andrea;Herwig, Nadine;Hadian, Javad;Schulz, Hartwig;Meiners, Torsten. And the article was included in Journal of Agricultural and Food Chemistry in 2020.HPLC of Formula: 638-02-8 The following contents are mentioned in the article:

Environmental factors shape the production and accumulation processes of plant secondary metabolites in medical and aromatic plants and thus their pharmacol. and biol. activity. Using an environmental metabolomics approach, we determined chemotypes and specific compounds on the basis of essential oils (EOs) from roots of 10 Iranian Ferula assa-foetida L. populations and related them to geog., climate, and edaphic data. GC-MS revealed three distinct chemotypes characterized by (I) monoterpenes and Z-1-propenyl sec-Bu disulfide; (II) eudesmane sesquiterpenoids and α-agarofuran; and (III) Z- and E-1-propenyl sec-Bu disulfide. NIRS measurements indicated a similar but less distinct pattern. Structural equation models showed that EO constituents and content were directly influenced by edaphic factors (texture, pH, and iron, potassium, and aluminum content) and temperature and predominantly indirectly by latitude, longitude, and altitude. Predicting EO constituents or chemotypes by geog., climate, and soil factors can be used in F. assa-foetida to select populations with specific EO characteristics. This study involved multiple reactions and reactants, such as 2,5-Dimethylthiophene (cas: 638-02-8HPLC of Formula: 638-02-8).

2,5-Dimethylthiophene (cas: 638-02-8) belongs to benzothiophene derivatives. Benzothiophene is a fused ring compound of thiophene ring and benzene ring, which is an important class of heterocycles with advantageous structures. It is found within the chemical structures of pharmaceutical drugs such as raloxifene, zileuton, and sertaconazole, and also BTCP.HPLC of Formula: 638-02-8

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Formation mechanism of aroma compounds in a glutathione-glucose reaction with fat or oxidized fat was written by Zhao, Jian;Wang, Tianze;Xie, Jianchun;Xiao, Qunfei;Cheng, Jie;Chen, Feng;Wang, Shi;Sun, Baoguo. And the article was included in Food Chemistry in 2019.Electric Literature of C6H8S The following contents are mentioned in the article:

Glutathione and glucose with or without chicken fat/oxidized chicken fat were thermally reacted for generation of stewed meat-like aroma, where 42 sulfur-containing odorants were identified by gas chromatog.-mass spectrometry (GC-MS) and gas chromatog.-olfactometry (GC-O). The observed effects or interactions on meat flavor formation due to the fats were similar to previous reports of cysteine-reducing sugar reactions. Carbohydrate module labeling approach demonstrated ten alkyl chain compounds were indeed resulted from the lipid degradation-Maillard reaction interactions, whereas the fats had little effect on formation pathways of compounds only derived from the Maillard reaction. Formation pathways of 26 potent aroma compounds were proposed, particularly, involving two benzene derivatives and seven complex thiophenes. Notably, it was found for the first time just 2-ethylthiophene could result from both an intact skeleton of glucose and the lipid degradation product of 2,4-hexadienal, and the carbohydrate modules methylglyoxal and hydroxyacetone could arise from the glutamic acid of GSH. This study involved multiple reactions and reactants, such as 2,5-Dimethylthiophene (cas: 638-02-8Electric Literature of C6H8S).

2,5-Dimethylthiophene (cas: 638-02-8) belongs to benzothiophene derivatives. Benzothiophene scaffolds are of great importance due to its increased presence in bioactive molecules. The different substitution patterns in these heterocycles offer new opportunities for drug discovery and other applications in materials science.Electric Literature of C6H8S

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Reactions of a 3-phenyl-1-trifluoromethyl-prop-2-yne iminium salt with furans, thiophenes, and pyrroles was written by Schneider, Thomas;Heinrich, Georg;Koch, Raphael;Maas, Gerhard. And the article was included in European Journal of Organic Chemistry in 2021.Recommanded Product: 638-02-8 The following contents are mentioned in the article:

Reactions of a novel propyne iminium salt, N,N-di-Me 3-phenyl-1-trifluoromethyl-propyne iminium triflate, with electron-rich heteroaromatic ring systems (furans, thiophenes, pyrroles) are reported. The 1-CF₃-propyne iminium ion can act as a highly reactive ambident electrophile, giving rise to simple electrophilic heteroaromatic ring substitution products, and as a 1,3-biselectrophile leading to C₂+C₃-CF₃ annulation products. Moreover, it is an electron-deficient alkyne which was found to afford double [2+2] cycloaddition products with 2,5-dimethylfuran and 2,5-dimethylthiophene. The obtained mol. structures include CF₃-containing compounds with cyclopenta[b]furan, cyclopenta[b]thiophene, cyclopenta[c]thiophene, cyclopenta[b]pyrrole, cyclopenta[c]pyrrole, 3H-pyrrolizine, and 1,4-dihydrocyclopenta[b]pyrrole ring systems. Analogous reactions of 1,3(or 1,4)-phenylenebis(1-CF₃-propyne iminium) salts with furans, pyrroles or thiophenes in a 2 : 1 stoichiometry lead to phenylene-tethered condensed heterocycles of the same type. This study involved multiple reactions and reactants, such as 2,5-Dimethylthiophene (cas: 638-02-8Recommanded Product: 638-02-8).

2,5-Dimethylthiophene (cas: 638-02-8) belongs to benzothiophene derivatives. Benzothiophene is a fused ring compound of thiophene ring and benzene ring, which is an important class of heterocycles with advantageous structures. It is also used in the manufacturing of dyes such as thioindigo.Recommanded Product: 638-02-8

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Interface engineering of quaternary ammonium phosphotungstate for efficient oxidative desulfurization of high-sulfur petroleum coke was written by Gong, Jiahong;Xu, Huanhuan;Liu, Jixing;Liu, Hui;Hua, Mingqing;Yang, Ning;Wu, Peiwen;Li, Huaming;Zhu, Wenshuai. And the article was included in Petroleum Science and Technology.Formula: C6H8S The following contents are mentioned in the article:

Reducing the sulfur content in high-sulfur petroleum coke (HSPC) has become an urgent issue, however, remains a great challenge with the development of petroleum refining industry. Herein, a highly-efficient catalyst quaternary ammonium phosphotungstate ionic liquid [(C4H9)4N]3PW12O40 (C4@HPA) was initiated to activate H2O2, and the sulfur content of HSPC was remarkably decreased from 4.46 weight% to 2.76 weight% at a relatively mild temperature (70 oC), which is discernible below than 1400 oC in industry. The characterization results showed that only sulfate can be removed, while sulfoxide and sulfone were retained in petroleum coke. Moreover, the desulfurization activity of C4@HPA/H2O2 to thiophene sulfides decreases as follows: Thiophene > 2-Methylthiophene > 2,5-Dimethylthiophene > Dibenzothiophene > 4-Methyldibenzothiophene. It reveals that the sulfur of 4-MDBT is the most difficult to be removed. Therefore, this founding here may shine light on the understanding and construction of efficient catalyst for desulfurization of high-sulfur petroleum coke in industry. This study involved multiple reactions and reactants, such as 2,5-Dimethylthiophene (cas: 638-02-8Formula: C6H8S).

2,5-Dimethylthiophene (cas: 638-02-8) belongs to benzothiophene derivatives. Benzothiophene is relatively a stable molecule. The core structure is a part of various pharmaceutical substances and natural products. Due to its aromaticity, thiophenes do not exhibit the same properties as conventional thioethers.Formula: C6H8S

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Meat flavor generation from different composition patterns of initial Maillard stage intermediates formed in heated cysteine-xylose-glycine reaction systems was written by Zhao, Jian;Wang, Tianze;Xie, Jianchun;Xiao, Qunfei;Du, Wenbin;Wang, Yaxin;Cheng, Jie;Wang, Shi. And the article was included in Food Chemistry in 2019.Product Details of 638-02-8 The following contents are mentioned in the article:

Volatile compounds formed in model reactions involving synthesized initial Maillard intermediates Gly-Amadori and [¹³C₅]-2-threityl-thiazolidine-4-carboxylic acids ([¹³C₅]-TTCA) in different molar ratios and free cysteine and glycine were investigated by solid-phase microextraction/gas chromatog.-mass spectrometry and gas chromatog.-olfactometry. The 1:1 ratio composition pattern provided the highest yields of all the sulfur-containing compounds, the potent meaty flavors or their ¹³C-labeled/unlabeled fractions, indicating a moderate level of glycine relative to cysteine was optimum for maximally yielding meaty flavors in complex meat-like Maillard systems containing cysteine as well as glycine. In addition, the 1:1 ratio composition led to formation of ¹³C-labeled mols. of some key meaty flavors e.g. 2-furanthiol representing over 70%, indicating TTCA/glycine reaction was better than Gly-Amadori/cysteine to yield meaty flavors. Formation pathways of twenty-nine flavors were elucidated based on the detected isotope distribution patterns. In particular, 2-methyltetrahydrothiophen-3-one, 3-thiophenethiol, 2-ethylthiophene, 2,5-dimethylthiophene, and 5-methylthiophene-2-carboxaldehyde involved a new formation pathway. Thiophene-2-carboxaldehyde and 2-methylthieno[3,2-b]thiophene showed two formation pathways. This study involved multiple reactions and reactants, such as 2,5-Dimethylthiophene (cas: 638-02-8Product Details of 638-02-8).

2,5-Dimethylthiophene (cas: 638-02-8) belongs to benzothiophene derivatives. Benzothiophene scaffolds are of great importance due to its increased presence in bioactive molecules. It is also used in the manufacturing of dyes such as thioindigo.Product Details of 638-02-8

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem