Tag: 200-300

Essential Oil of Deverra tortuosa Aerial Parts: Detailed Chemical Profile, Allelopathic, Antimicrobial, and Antioxidant Activities was written by Fayed, Eman M.;Abd-EIGawad, Ahmed M.;Elshamy, Abdelsamed I.;El-Halawany, El-Sayed F.;EI-Amier, Yasser A.. And the article was included in Chemistry & Biodiversity in 2021.HPLC of Formula: 3386-33-2 This article mentions the following:

Essential oils (EOs) are a promising group of natural products of the aromatic plants due to their various biol. effects such as allelopathic, antioxidant, antimicrobial activities. The present study aimed to construct the detailed chem. profile of the EO derived from Deverra tortuosa aerial parts along with assessing its allelopathic, antimicrobial, and antioxidant potentialities. The EO was extracted by hydrodistillation and analyzed via gas chromatog.-mass spectrometry (GC/MS). The allelopathic activity of the EO was assessed against the germination and seedling growth of the weed Chenopodium murale. Also, the EO was tested against five microbes. The antioxidant activity was determined using the free radical 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS). The GC/MS anal. of EO revealed the presence of 86 compounds with a preponderance of oxygenated sesquiterpenes and monoterpene hydrocarbons. Widdrol, β-phellandrene, piperitol, cubedol, α-terpinene, (E)-10-heptadecen-8-ynoic acid Me ester, citronellyl tiglate, and m-cymene were the major compounds A comparative profile was established between the EOs constituents of our study with the documented EOs of D. tortuosa and the other Deverra species around the world via agglomerative hierarchical clustering (AHC) and principal components anal. (PCA). The EO showed a substantial allelopathic activity against C. murale, as well as it showed considerable antimicrobial and antioxidant activities. Thereby, the EO of D. tortuosa could be considered as a promising environmental-friendly bioherbicide against weeds. Also, it could be integrated into food preservation due to its potent antimicrobial and antioxidant activities. However, further study is recommended for more characterization of the major compounds and evaluation of their activities, either singular or synergistic, and assess their efficiency and biosafety. In the experiment, the researchers used many compounds, for example, 1-Chlorooctadecane (cas: 3386-33-2HPLC of Formula: 3386-33-2).

1-Chlorooctadecane (cas: 3386-33-2) belongs to organic chlorides. Organic chlorides can be used in production of: PVC, pesticides, chloromethane, teflon, insulators. Aliphatic organochlorides are often alkylating agents as chlorine can act as a leaving group, which can result in cellular damage.HPLC of Formula: 3386-33-2

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Changes in Hydrocarbon Composition and Autochthonous Microorganism Growth of Contaminated Mining Soil During Bioremediation was written by Lopez-Miranda, Javier;Cisneros-de la Cueva, Sergio;Paez-Lerma, Jesus Bernardo;Rojas-Contreras, Juan Antonio;Soto-Cruz, Nicolas Oscar. And the article was included in Water, Air, & Soil Pollution in 2018.Recommanded Product: 3386-33-2 This article mentions the following:

The goal of this study was to evaluate the effect of high Tween 80 concentrations on hydrocarbon contaminants and hydrocarbonoclastic microorganisms present in contaminated mining soil during a bioremediation process. The independent variables included Tween 80 concentration and process time. The elected response variables included concentration of total petroleum hydrocarbons (TPH), the chem. composition of contaminants, viable microbial count, and CO₂ production These were measured at various time points during the bioremediation process, which was conducted at room temperature Higher removal of pollutants occurred at low Tween 80 concentrations An anal. of the normalized variables shows that the rate of TPH degradation depended on microbial growth rate, which depended on Tween 80 concentration The addition of Tween 80 changed the concentration and type of the residual hydrocarbon contaminants present, as well as the count and genus of the hydrocarbonoclastic microorganisms that grew during the bioremediation process. Higher concentrations of Tween 80 increased the levels of the chem. compounds present in the bioremediated soil while reducing the viable count and microbial diversity during the bioremediation process. Conversely, low Tween 80 concentrations produced only monoethylhexyl phthalate, which is not a petroleum hydrocarbon derivative Overall, these results prove that the removal of TPH is dependent on the count and genus of active indigenous hydrocarbonoclastic microorganisms in soil, and these conditions may be controlled by modulating the concentration of Tween 80 that is applied. In the experiment, the researchers used many compounds, for example, 1-Chlorooctadecane (cas: 3386-33-2Recommanded Product: 3386-33-2).

1-Chlorooctadecane (cas: 3386-33-2) belongs to organic chlorides. Chlorination modifies the physical properties of hydrocarbons in several ways. These compounds are typically denser than water due to the higher atomic weight of chlorine versus hydrogen. Alkyl chlorides are versatile building blocks in organic chemistry. While alkyl bromides and iodides are more reactive, alkyl chlorides tend to be less expensive and more readily available.Recommanded Product: 3386-33-2

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Rearrangements Encountered in the Attempted Syntheses of Pyridoazepinone Carboxylic Acids was written by Sanders, William J.;Zhang, Xiaolin;Wagner, Rolf. And the article was included in Organic Letters in 2004.Application In Synthesis of Ethyl 3-(2,6-Dichloro-5-fluoro-3-pyridyl)-3-oxopropionate This article mentions the following:

Attempts to synthesize pyridoazepinone carboxylic acids by standard methodologies resulted exclusively in unusual and unexpected rearrangement products. Seven-membered ring formation was attempted by ring expansion of a six-membered ring and by aldol ring closure. In each case, the major product resulted from rearrangement of the starting material without detection of the desired product. Ultimately, an isomeric pyridoazepinone Et ester was prepared; however, attempted saponification resulted in another unusual rearrangement. In the experiment, the researchers used many compounds, for example, Ethyl 3-(2,6-Dichloro-5-fluoro-3-pyridyl)-3-oxopropionate (cas: 96568-04-6Application In Synthesis of Ethyl 3-(2,6-Dichloro-5-fluoro-3-pyridyl)-3-oxopropionate).

Ethyl 3-(2,6-Dichloro-5-fluoro-3-pyridyl)-3-oxopropionate (cas: 96568-04-6) belongs to organic chlorides. Organochlorines stimulate the central nervous system and cause convulsions, tremor, nausea, and mental confusion. Examples are dichlorodiphenyltrichloroethane (DDT), chlordane, lindane, endosulfan, and dieldrin. Alkyl chlorides readily react with amines to give substituted amines. Alkyl chlorides are substituted by softer halides such as the iodide in the Finkelstein reaction.Application In Synthesis of Ethyl 3-(2,6-Dichloro-5-fluoro-3-pyridyl)-3-oxopropionate

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Efficient Divergent Synthesis of 2�O,4�C-Ethylene-Bridged Nucleic Acid (ENA) Phosphoramidites was written by Abe, Yuzo;Ukai, Kazutoshi;Michida, Makoto. And the article was included in Organic Process Research & Development in 2022.Application of 76-83-5 This article mentions the following:

2â€?O,4â€?C-Ethylene-bridged nucleic acid (ENA) phosphoramidites are highly promising modified nucleic acid monomers discovered by Daiichi Sankyo. To increase the productivity of manufacturing, we have developed a highly efficient synthetic method for ENA phosphoramidites. The basic concept of the new synthetic route is “divergent synthesis” for the preparation of four types of monomers such as A, G, C, and T. We applied stereoselective glycosylation reactions without utilizing neighboring group participation to set a common intermediate in the downstream of the route. In the experiment, the researchers used many compounds, for example, (Chloromethanetriyl)tribenzene (cas: 76-83-5Application of 76-83-5).

(Chloromethanetriyl)tribenzene (cas: 76-83-5) belongs to organic chlorides. Organochlorines are organic compounds having multiple chlorine atoms. They were the first synthetic pesticides that were used in agriculture. They are resistant to most microbial and chemical degradations.While alkyl bromides and iodides are more reactive, alkyl chlorides tend to be less expensive and more readily available. Alkyl chlorides readily undergo attack by nucleophiles.Application of 76-83-5

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

A Versatile and Inexpensive Apparatus for Rapid Parallel Synthesis on Solid Support: Description and Synthesis Illustration was written by Saha, Ashis K.;Liu, Li;Simoneaux, Richard L.. And the article was included in Journal of Combinatorial Chemistry in 2001.Quality Control of 4-Butoxybenzene-1-sulfonyl chloride This article mentions the following:

A new inexpensive and practical apparatus for solid-phase chem. and parallel synthesis is described. This new apparatus fills an important void in the availability of portable tools for the synthesis of libraries of compounds in multi-milligram amounts Individual reaction tube capacities range in size from 4 mL to 500 mL of operating liquid volume Reaction blocks of 36 tubes × 4 mL or 24 tubes × 150 mL allow flexibility of operation. Insert tubes with frit ends function as filter sticks for resin wash and for maintenance of inert atm. An electronic controller device connects to the reaction tubes for programmable entry of pulses of inert gas for resin mixing or vacuum for resin wash. The utility of this apparatus is illustrated by the synthesis of a library of N-(imidazolylmethyl)arylsulfonamides. In the experiment, the researchers used many compounds, for example, 4-Butoxybenzene-1-sulfonyl chloride (cas: 1138-56-3Quality Control of 4-Butoxybenzene-1-sulfonyl chloride).

4-Butoxybenzene-1-sulfonyl chloride (cas: 1138-56-3) belongs to organic chlorides. Organochlorines are organic compounds having multiple chlorine atoms. They were the first synthetic pesticides that were used in agriculture. They are resistant to most microbial and chemical degradations. Organochlorine compounds are lipophylic, meaning they are more soluble in fat than in water. This gives them a high tenancy to accumulate in the food chain (biomagnification).Quality Control of 4-Butoxybenzene-1-sulfonyl chloride

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Electrochemically generated N-iodoaminium species as key intermediates for selective methyl sulphonylimination of tertiary amines was written by Huang, Binbin;Yang, Chao;Zhou, Jia;Xia, Wujiong. And the article was included in Chemical Communications (Cambridge, United Kingdom) in 2020.Application In Synthesis of 2,4-Dimethoxybenzene-1-sulfonyl chloride This article mentions the following:

A straightforward protocol for approaching N-sulfonylamidines (E/Z)-RS(O)₂N=CHN(R¹)(R²) (R = Me, 2-fluorophenyl, thiophen-2-yl, etc.; R¹ = Me; R² = Et, cyclohexyl, benzyl, etc.; R¹R² = -(CH₂)₅-, -(CH₂)₂O(CH₂)₂-) and I via an electricity-driven, iodine-mediated cross dehydrogenative condensation (CDC) between sulfonamides RS(O)₂NH₂ and tertiary amines CH₃N(R¹)(R²), which features exclusive N-CH₃ selectivity for the amine partners was reported. Mechanistic studies indicate that an in situ generated N-iodoaminium species serves as the key intermediate. In the experiment, the researchers used many compounds, for example, 2,4-Dimethoxybenzene-1-sulfonyl chloride (cas: 63624-28-2Application In Synthesis of 2,4-Dimethoxybenzene-1-sulfonyl chloride).

2,4-Dimethoxybenzene-1-sulfonyl chloride (cas: 63624-28-2) belongs to organic chlorides. Organic chlorides can cause corrosion in pipelines, valves and condensers, and cause catalyst poisoning. The hydrocarbon processing industry (HPI) and others are affected by damage caused by these substances. The haloform reaction, using chlorine and sodium hydroxide, is also able to generate alkyl halides from methyl ketones, and related compounds. Chloroform was formerly produced thus.Application In Synthesis of 2,4-Dimethoxybenzene-1-sulfonyl chloride

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Evaluation of the flavor compounds of Pleurotus eryngii as affected by baking temperatures using HS-SPME-GC-MS and electronic nose was written by Zhu, Mengwei;Hu, Zhizhong;Liang, Miao;Song, Lingyong;Wu, Wentao;Li, Ruili;Li, Zhihua;Zhang, Junsong. And the article was included in Journal of Food Processing and Preservation.Electric Literature of C10H19ClO2 This article mentions the following:

This study evaluated the effect of different baking temperatures on the flavor compounds of Pleurotus eryngii using electronic nose (E-nose) and headspace solid-phase microextraction gas chromatog.-mass spectrometry (HS-SPME-GC-MS). A total of 105 volatile compounds were detected, including aldehydes (14), esters (18), alcs. (23), ketones (7), acids (6), pyrazines (8), hydrocarbons (18), and other compounds (11). The results of E-nose combined with the content of volatile compounds indicated that with the increase of baking temperatures, the content of alcs. and esters decreased while the content of aldehydes, ketones, and pyrazines increased, which increased the malty, sweet, and roasted nutty flavor. In addition, 11 volatile compounds were identified as key odor compounds with relative odor activity value (ROAV) > 1. P. eryngii samples baked at 120°C possessed the most varieties of volatile compounds (up to 69), which increased the richness and layering of flavor of baked P. eryngii as reflected by sensory anal. These results may provide guidance for the controllable formation of flavor compounds in P. eryngii by using baking method. Novelty impact statement : The sensory anal. showed that the sample Pleurotus eryngii baked at 120°C increased the richness and layering of flavor of baked P. eryngii, which was basically in accordance with the component anal. results. Therefore, The results obtained in this study could provide guidance for controlling the formation of odor and taste of P. eryngii by using baking method. In the experiment, the researchers used many compounds, for example, Chloroformicacidn-nonylester (cas: 57045-82-6Electric Literature of C10H19ClO2).

Chloroformicacidn-nonylester (cas: 57045-82-6) belongs to organic chlorides. Organochlorines stimulate the central nervous system and cause convulsions, tremor, nausea, and mental confusion. Examples are dichlorodiphenyltrichloroethane (DDT), chlordane, lindane, endosulfan, and dieldrin. Alkyl chlorides are versatile building blocks in organic chemistry. While alkyl bromides and iodides are more reactive, alkyl chlorides tend to be less expensive and more readily available.Electric Literature of C10H19ClO2

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Manganese-Catalyzed ortho-C-H Amidation of Weakly Coordinating Aromatic Ketones was written by Kong, Xianqiang;Xu, Bo. And the article was included in Organic Letters in 2018.Product Details of 777-44-6 This article mentions the following:

An efficient manganese-catalyzed ortho-C-H amidation of weakly coordinating aromatic ketones using the readily available sulfonyl azide as the amination reagent is developed. The key step is the ketone directed aromatic metalation using the in situ generated reactive Mn intermediate, MnMe(CO)₅. This method offers excellent chem. yields, high regioselectivities, and good functional group tolerance. In the experiment, the researchers used many compounds, for example, 3-(Trifluoromethyl)benzene-1-sulfonyl chloride (cas: 777-44-6Product Details of 777-44-6).

3-(Trifluoromethyl)benzene-1-sulfonyl chloride (cas: 777-44-6) belongs to organic chlorides. Chlorinated organic compounds are found in nearly every class of biomolecules and natural products including alkaloids, terpenes, amino acids, flavonoids, steroids, and fatty acids. Aliphatic organochlorides are often alkylating agents as chlorine can act as a leaving group, which can result in cellular damage.Product Details of 777-44-6

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

A scalable method to fabricate high-performance biomimetic membranes for seawater desalination: Incorporating pillar[5]arene water nanochannels into the polyamide selective layer was written by Lim, Yu Jie;Lai, Gwo Sung;Zhao, Yali;Ma, Yunqiao;Torres, Jaume;Wang, Rong. And the article was included in Journal of Membrane Science in 2022.COA of Formula: C9H3Cl3O3 This article mentions the following:

In this work, we explored the practicability of a nanochannel-based biomimetic membrane (NBM) incorporating pillar[5]arene water channels for seawater reverse osmosis (SWRO) desalination. Two classes of peptide-attached biomimetic channels, (pR)-pillar[5]arenes (pRPH) and (pS)-pillar[5]arenes (pSPH) were integrated into the selective layer of SWRO membranes via interfacial polymerization on the top side of a polysulfone (PSf) support membrane. Here, pSPH is a non-identical stereoisomer of pRPH and was used as a neg. control to pRPH to elucidate the flux enhancement effect contributed by pRPH. The optimized NBM presented a water permeability of 2.52 L m^-2 h^-1 bar^-1 and 99.5% rejection under SWRO testing conditions of 50 bar applied pressure and 32,000 mg/L NaCl as feed solution The 62% permeability increment with reference to the control membrane is hypothesized to originate from hybrid polyamide layers that were rougher with more voids (higher effective surface area and lower hydraulic resistance for water transport) as well as the conceivable water transport pathways provided by the pRPH channels. The simulation results from module-scale modeling suggest that the optimized NBM could lead to 7.2% savings in specific energy consumption of the membrane unit stage (or reduce the required membrane area by 25%) with respect to the com. SWC4-LD membrane. The performance of the optimized NBM was further assessed in a one-week desalination test using an actual seawater feed gathered from an SWRO plant in Singapore. The robust NBM exhibited stable performance and �8% higher water flux (42 L m^-2 h^-1) than SWC4-LD with a comparable rejection of 99.3%, suggesting the feasibility of pillar[5]arene-based biomimetic membranes for seawater desalination. In the experiment, the researchers used many compounds, for example, Trimesoylchloride (cas: 4422-95-1COA of Formula: C9H3Cl3O3).

Trimesoylchloride (cas: 4422-95-1) belongs to organic chlorides. Organic chlorides are compounds containing a carbon-chlorine bond, which are widely used in the oil field as a wax dissolver. The haloform reaction, using chlorine and sodium hydroxide, is also able to generate alkyl halides from methyl ketones, and related compounds. Chloroform was formerly produced thus.COA of Formula: C9H3Cl3O3

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Effectiveness of sodium sulfite as an electron acceptor for bioenhanced treatment of salt-containing water produced from ASP flooding was written by Zhang, Xinxin;Wei, Dong;Li, Chunying;Wei, Li;Zhao, Min. And the article was included in Chemosphere in 2021.Formula: C18H37Cl This article mentions the following:

The wastewater produced from alk.-surfactant-polymer (ASP) flooding is a complex multiphase mixture that contains oil, polymers, surfactants and other pollutants and is thus a salt-containing industrial waste recalcitrant to treatments. Through laboratory tests, this study assessed the effectiveness of using sodium sulfite as an electron acceptor for a modified anaerobic baffled reactor (ABR) for removing oil, suspended solids, polymers and surfactants from salt-containing wastewater produced from ASP flooding. During the 90-day operation, the method established in this study successively removed 52.8%, 98.6%, 77.0%, 21.2% and 21.5% of the COD (COD), oil, suspended solids, polymers and surfactants, resp., from the wastewater. The changes in organic compounds in the reactor during the treatment were monitored through gas chromatog.-mass spectrometry (GC-MS), and the results showed that the established method was very effective in removing alkanes, alkenes, cycloalkanes, aromatic hydrocarbons and esters, and the organic macromols. in the wastewater were degraded to small mols. The main bacterial species and microbial communities in the reactor were characterized using mol. biol. techniques, and the results indicated that under the stress of high pH and salts, Halomonas sp. gradually dominated and played a major role in degrading hydrocarbons. The findings of this study can aid the development of a cost-effective biol. system to treat the water produced from ASP flooding. In the experiment, the researchers used many compounds, for example, 1-Chlorooctadecane (cas: 3386-33-2Formula: C18H37Cl).

1-Chlorooctadecane (cas: 3386-33-2) belongs to organic chlorides. Organochlorines stimulate the central nervous system and cause convulsions, tremor, nausea, and mental confusion. Examples are dichlorodiphenyltrichloroethane (DDT), chlordane, lindane, endosulfan, and dieldrin. Alkyl chlorides readily react with amines to give substituted amines. Alkyl chlorides are substituted by softer halides such as the iodide in the Finkelstein reaction.Formula: C18H37Cl

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics