Tag: 200-300

Scalable Pillar[5]arene-Integrated Poly(arylate-amide) Molecular Sieve Membranes to Separate Light Gases was written by Song, Woochul;Park, Jaesung;Dasgupta, Subhadeep;Yao, Chenhao;Maroli, Nikhil;Behera, Harekrushna;Yin, Xinyang;Acharya, Durga P.;Zhang, Xueyi;Doherty, Cara M.;Maiti, Prabal K.;Freeman, Benny D.;Kumar, Manish. And the article was included in Chemistry of Materials in 2022.Formula: C9H3Cl3O3 This article mentions the following:

Mol. sieve membranes and their analogs could potentially transform energy-intensive gas separation processes. However, many such membranes suffer from either limited processability or phys. stability including plasticization of semi-flexible microstructures. Here, we report on a new variation of all-polymer-based mol. sieve membranes that could tackle these specific challenges. These membranes were prepared by the interfacial polymerization of pillar[5]arene, m-phenylenediamine, and trimesoyl chloride to create characteristic poly(arylate-amide) heteropolymer microstructures. Pillar[5]arenes were crosslinked into the films with net weight fractions of up to ~47%, wherein the 4.7 Å cavities of pillar[5]arenes were interconnected with ~2.8 Å apertures. These microstructures provided preferred permeation paths for smaller mols. (He and H₂) among the tested light gases (He, H₂, CO₂, O₂, N₂, and CH₄) and resulted in significant mol. sieving effects with representative pure gas selectivities of 32 (H₂/CO₂), 150 (CO₂/CH₄), 4600 (H₂/CH₄), 13 (O₂/N₂), and 4.7 (N₂/CH₄) at 35°C and 10 atm. These separation factors outperform most polymer-based gas separation membranes, while providing membrane features such as thin film barriers, cross-linked polymer backbones, and excellent processability resulting from interfacial polymerization that are critical for large-scale operations. In the experiment, the researchers used many compounds, for example, Trimesoylchloride (cas: 4422-95-1Formula: C9H3Cl3O3).

Trimesoylchloride (cas: 4422-95-1) belongs to organic chlorides. Organic chlorides can be used in production of: PVC, pesticides, chloromethane, teflon, insulators. 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.Formula: C9H3Cl3O3

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

Pyridonecarboxylic acids as antibacterial agents. VII. Synthesis and antibacterial activities of 1-(p-fluorophenyl)-6-fluoro-1,4-dihydro-4-oxo-7-substituted pyridino[2,3-c]pyridazine-3-carboxylic acids was written by Mu, Yongqi;Guo, Huiyuan;Zhang, Zhiping. And the article was included in Zhongguo Kangshengsu Zazhi in 1989.Quality Control of Ethyl 3-(2,6-Dichloro-5-fluoro-3-pyridyl)-3-oxopropionate This article mentions the following:

Title compound, I (R = OH, Cl, NHNH₂, NH₂, NMe₂, NHMe, PhO, 4-FC₆HeNH, cyclopropylamino, pyrrolidino, piperidino, morpholino, piperazino, N–methylpiperazino) were prepared from pyridine II (Z = H₂) via cyclization of II (Z = 4-FC₆H₄NHN:). I had a min. inhibitory concentration of âˆ?00 μg/mL against E. coli 1515. In the experiment, the researchers used many compounds, for example, Ethyl 3-(2,6-Dichloro-5-fluoro-3-pyridyl)-3-oxopropionate (cas: 96568-04-6Quality Control 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. 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. 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 Ethyl 3-(2,6-Dichloro-5-fluoro-3-pyridyl)-3-oxopropionate

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

Effect of the green synthesized rGO and Mg/rGO nanocomposites on the phytochemical assay, toxicity, and metabolism of Mentha longifolia in vitro cultures was written by Jafarirad, Saeed;Kosari-Nasab, Morteza;Aminpour, Monireh;Rezaei, Zahra. And the article was included in Environmental Science and Pollution Research in 2022.Computed Properties of C18H37Cl This article mentions the following:

Reduced graphene oxide (rGO) and Mg/rGO nanocomposites (NCs) were prepared by an eco-friendly technique using Rosa canina fruit extract Physicochem. properties and cytotoxicity to Mentha longifolia in vitro cultures of these nanomaterials were examined by using XRD, FESEM, EDX, FT-IR, DLS/zeta potential, UV-Visible, and GC-MS techniques. The characterization techniques confirmed the synthesis of rGO and Mg/rGO NCs with particle sizes less than 20 nm (based on FESEM). In accordance to the biol. measurements, rGO showed in vitro cytotoxicity to M. longifolia shoot cultures. Mg/rGO NCs showed no significant difference in the growth parameters except for a decrease in the shoot number at the concentrations of 50 and 150 mg/L and a decrease in the length of the tallest root at the concentrations of 100 and 150 mg/L, however efficiently improved the photosynthetic pigment contents. The phytochem. assay depicted that the total content of volatile compounds was increased in the treated cultures with 25, 50, and 100 mg/L of rGO and Mg/rGO NCs in comparison to the control. Generally, the more oxygenated and hydrocarbon sesquiterpenes were observed in the cultures treated with 25 and 100 mg/L of rGO and 25 and 50 mg/L of Mg/rGO NCs. In the experiment, the researchers used many compounds, for example, 1-Chlorooctadecane (cas: 3386-33-2Computed Properties of C18H37Cl).

1-Chlorooctadecane (cas: 3386-33-2) belongs to organic chlorides. Organic chlorides can be used in production of: PVC, pesticides, chloromethane, teflon, insulators. 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.Computed Properties of C18H37Cl

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

CON4EI: Development of testing strategies for hazard identification and labelling for serious eye damage and eye irritation of chemicals was written by Adriaens, E.;Verstraelen, S.;Alepee, N.;Kandarova, H.;Drzewiecka, A.;Gruszka, K.;Guest, R.;Willoughby, J. A. Sr.;Van Rompay, A. R.. And the article was included in Toxicology In Vitro in 2018.Electric Literature of C10H8Cl2FNO3 This article mentions the following:

Assessment of acute eye irritation potential is part of the international regulatory requirements for safety testing of chems. In the last decades, many efforts have been made in the search for alternative methods to replace the regulatory in vivo Draize rabbit eye test (OECD TG 405). Success in terms of complete replacement of the regulatory in vivo Draize rabbit eye test has not yet been achieved. The main objective of the CEFIC-LRI-AIMT6-VITO CON4EI (CONsortium for in vitro Eye Irritation testing strategy) project was to develop tiered testing strategies for serious eye damage and eye irritation assessment that can lead to complete replacement of OECD TG 405. A set of 80 reference chems. (e.g., balanced by important driver of classification and phys. state), was tested with seven test methods. Based on the results of this project, three different strategies were suggested. The authors have provided a standalone (EpiOcular ET-50), a two-tiered and three-tiered strategy, that can be used to distinguish between Cat 1 and Cat 2 chems. and chems. that do not require classification (No Cat). The two-tiered and three-tiered strategies use an RhCE test method (EpiOcular EIT or SkinEthic EIT) at the bottom (identification No Cat) in combination with the BCOP LLBO (two-tiered strategy) or BCOP OP-KIT and SMI (three-tiered strategy) at the top (identification Cat 1). For the authors’ proposed strategies, 71.1% – 82.9% Cat 1, 64.2% – 68.5% Cat 2 and â‰?0% No Cat chems. were correctly identified. Also, similar results were obtained for the Top-Down and Bottom-Up approach. In the experiment, the researchers used many compounds, for example, Ethyl 3-(2,6-Dichloro-5-fluoro-3-pyridyl)-3-oxopropionate (cas: 96568-04-6Electric Literature of C10H8Cl2FNO3).

Ethyl 3-(2,6-Dichloro-5-fluoro-3-pyridyl)-3-oxopropionate (cas: 96568-04-6) belongs to organic chlorides. An organic chloride is an organic compound containing at least one covalently bonded atom of chlorine. Their wide structural variety and divergent chemical properties lead to a broad range of names and applications. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. However, the extent of chlorination is difficult to control.Electric Literature of C10H8Cl2FNO3

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

Phytochemical profiling of the leaves of Brassica juncea L. using GC-MS was written by Sharma, A.;Kumar, V.;Kanwar, M. K.;Thukral, A. K.;Bhardwaj, R.. And the article was included in International Food Research Journal in 2017.Application In Synthesis of 1-Chlorooctadecane This article mentions the following:

Brassica juncea L. is a source of several phytochems. of economic importance. The aim of the present study was to identify active phytochems. from the leaves of 60 days old plants after extraction with different solvents. Number of phytochems. detected were 51 (chloroform), 48 (ethyl-acetate), 40 (methanol), 33 (petroleum ether), and 28 (n-hexane). The major compounds identified were benzenepropanoic acid, 3,5-bis(1,1-dimethylethyl)- 4-hydroxy-, Me ester (22.98%, in methanol), n-eicosane (26.69%, in Et acetate), n-pentacosane (50.0%, in chloroform) and n-tetratetracontane (42.47 and 49.19%, in petroleum ether and n-hexane resp.). In all of the extracts, it was observed that compounds which belonging to alkane group dominated the most, followed by carboxylic acids containing fatty acids. In the experiment, the researchers used many compounds, for example, 1-Chlorooctadecane (cas: 3386-33-2Application In Synthesis of 1-Chlorooctadecane).

1-Chlorooctadecane (cas: 3386-33-2) 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.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 In Synthesis of 1-Chlorooctadecane

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

The closeness of fit of antibenzoate antibodies about haptens and the orientation of the haptens in combination was written by Pressman, David;Siegel, Malcolm;Hall, Luther A. R.. And the article was included in Journal of the American Chemical Society in 1954.Electric Literature of C7H4ClNO4 This article mentions the following:

The inhibitory action of chloro-substituted phenylazobenzoates on the specific precipitation of antibodies formed against benzoate ions yielded information about the closeness of fit about hapten of the previously uninvestigated portion of the antibody complementary region. With antibodies to the o-azobenzoate ion, the fit about the benzene ring was closest in the 3- and 4-positions and least close in the 6-position. With antibodies to m-benzoate, the fit was closest in the 4-position, least close in the 5-position, and intermediate in the 2- and 6-positions. For those cases where 2 orientations for the combination of hapten with antibody are possible, such as with the chlorobenzoates, the relative distribution was calculated For example, m-chlorobenzoate, which has been considered to combine with anti-m-azobenzoate antibodies with the Cl in the azospecific site of the antibody, is calculated to combine to the extent of 10% in the nonpreferred orientation. The following substituted benzoic acids (R = p-hydroxyphenylazo) were prepared, m.ps. are given: 3,2-Cl, R, 187-9°; 4,2-Cl, R, 245-6°; 5,2-Cl, R, 231-3°; 6,2-Cl, R, 194-5°; 2,3-Cl, R, 219-21°; 4,3-Cl, R, 268-71°; 5,3-Cl, R, 239-41°; 6,3-Cl, R, 244-6°; 2,4-Cl, R, 213-15°; o-R, 207.8-8.2°; m-R, 230-2°; p-R, 277-9° (decomposition). In the experiment, the researchers used many compounds, for example, 3-Chloro-5-nitrobenzoic acid (cas: 34662-36-7Electric Literature of C7H4ClNO4).

3-Chloro-5-nitrobenzoic acid (cas: 34662-36-7) belongs to organic chlorides. An organic chloride is an organic compound containing at least one covalently bonded atom of chlorine. Their wide structural variety and divergent chemical properties lead to a broad range of names and applications. 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.Electric Literature of C7H4ClNO4

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

Stereoselective protonation of 2-methyl-1-tetralone lithium enolate catalyzed by salan-type diamines was written by Lowicki, Daniel;Watral, Justyna;Jelecki, Maciej;Bohusz, Wiktor;Kwit, Marcin. And the article was included in Tetrahedron in 2021.SDS of cas: 76-83-5 This article mentions the following:

An efficient enantioselective protonation of 2-methyl-1-tetralone lithium enolate catalyzed by salan-type diamines I (Y = H, Me; X = H, OH, OMe; Z = t-Bu, H, NO₂, Br, OMe; R = H, t-Bu, triphenylmethyl) and IInod t-bu was reported. A broad series of salan-type catalysts I and II was synthesized, including several previously unknown, and subsequently tested in the title reaction. For the first time, a chiral amine I and II used as organocatalyst has shown better results than as stoichiometric protonating agent. Application of only 10 mol% of salan I and II allows to obtain the (S)-2-methyl-1-tetralone with high yield and enantiomeric excess up to 75%. The DFT calculations of the structure of the catalyst and its complex with lithium enolate were conducted, which makes it possible to propose a likely reaction mechanism. In the experiment, the researchers used many compounds, for example, (Chloromethanetriyl)tribenzene (cas: 76-83-5SDS of cas: 76-83-5).

(Chloromethanetriyl)tribenzene (cas: 76-83-5) 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. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. However, the extent of chlorination is difficult to control.SDS of cas: 76-83-5

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

Analysis of chemical composition of volatile oil from Stellaria yunnanensis franch by GC-MS was written by Li, Guijun;Wang, Fan. And the article was included in Guangdong Huagong in 2014.Application In Synthesis of 1-Chlorooctadecane This article mentions the following:

Volatile oil from Stellaria yunnanensis Franch was extracted via steam distillation GC-MS was used to analyze the chem. composition of volatile oil and peak area normalization method was used for quantification. Totally 40 compounds were separated and identified, mostly including vanillin (21.73%), acetovanillone (8.86%), tetradecanamide (6.97%), triphenylphosphine oxide (4.58%), 4-hydroxyacetyl-2-methoxyphenol (3.01%), 1-bromooctadecane (2.74%), 13-tetradecenyl acetate (1.57%), 3,5-dimethoxy-4-hydroxybenzaldehyde (1.28%), isovanillin (1.13%). In the experiment, the researchers used many compounds, for example, 1-Chlorooctadecane (cas: 3386-33-2Application In Synthesis of 1-Chlorooctadecane).

1-Chlorooctadecane (cas: 3386-33-2) 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 In Synthesis of 1-Chlorooctadecane

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

Development of polymer-based new high performance thin-film nanocomposite nanofiltration membranes by vapor phase interfacial polymerization for the removal of heavy metal ions was written by Karki, Sachin;Ingole, Pravin G.. And the article was included in Chemical Engineering Journal (Amsterdam, Netherlands) in 2022.Name: Trimesoylchloride This article mentions the following:

The vapor phase interfacial polymerization is the new method for the development of thin-film nanocomposite (TFN) and thin-film composite (TFC) membranes. Generally, interfacial polymerization (IP) is done between aqueous phase monomers and organic phase monomers (containing organic solvent like n-hexane) but in this work, IP was done between aqueous phase monomer with vapor phase of organic monomer (TMC) which is the greener method. First time TFN membranes were prepared by vapor phase interfacial polymerization method. TiO₂ nanoparticles act as very good nanofillers to prepare the polymeric nanocomposite membranes to tackle the problem of heavy metal pollution in water. However, their weak interaction with the matrix phase is an issue that causes them to leach out during the filtration process of pressure-driven nanofiltration membrane. Functionalizing the TiO₂ nanoparticles with polar functional groups is a solution to this issue. After synthesizing carboxylic acid-functionalized TiO₂ (COOH-TiO₂) nanoparticles were incorporated in the TFN membranes while IP using DETA and TMC containing amine and acyl group monomers, resp. to modify the membrane surface. The effect of different loading concentrations of COOH-TiO₂ nanoparticles in TFN has been studied and compared with the TFC membrane. The prepared membranes are subjected to a cross-filtration system for removing Na⁺, Cu⁺², Hg⁺², and Pb⁺² from their resp. Na₂SO₄, CuSO₄, HgCl₂, and Pb(NO₃)₂ feed solutions The results of TFN membranes were compared with the TFC membrane. The outcomes have shown 87.03 ± 2% rejection of Na⁺, 86.89 ± 2% rejection of Cu⁺², 77.01 ± 2% rejection of Hg⁺² and 83.42 ± 1.5% rejection of Pb⁺² ions by using TFN membranes. The effect of the monomeric concentration on the performance of the developed membranes was also studied. The antifouling tendency of the membranes was analyzed as well by measuring different antifouling parameters like total fouling (F_T), flux recovery ratio (F_RR), reversible fouling (F_R) and irreversible fouling (F_IR). The results obtained are outstanding; incorporating nanomaterial results in lowering the irreversible fouling and enhancing the antifouling tendency. In the experiment, the researchers used many compounds, for example, Trimesoylchloride (cas: 4422-95-1Name: Trimesoylchloride).

Trimesoylchloride (cas: 4422-95-1) 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. Aryl chlorides may be prepared by the Friedel-Crafts halogenation, using chlorine and a Lewis acid catalyst.Name: Trimesoylchloride

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

Development of lipophilic prodrugs of mitomycin C. III. Physicochemical and biological properties of newly synthesized alkoxycarbonyl derivatives was written by Sasaki, Hitoshi;Fukumoto, Mari;Hashida, Mitsuru;Kimura, Toshikiro;Sezaki, Hitoshi. And the article was included in Chemical & Pharmaceutical Bulletin in 1983.Application of 57045-82-6 This article mentions the following:

Five alkoxycarbonyl derivatives of mitomycin C possessing various lipophilic promoieties including benzyloxycarbonyl [86476-06-4], propyloxycarbonyl [88700-49-6], pentyloxycarbonyl [88700-50-9], nonyloxycarbonyl [88700-51-0] and cholesteryloxycarbonylmitomycin C  [88700-48-5] were synthesized and their physicochem. and biol. characteristics were examined All compounds showed increases of octanol/water partition coefficients, lipophilic indexes (k₀) in high-performance liquid chromatog. and lipid solubilities to various degrees depending on their promoiety structure. The prodrugs showed increased lipohilicity with increase in the length of the alkyl chain. They showed only slight antimicrobial activities against Escherichia coli B, but all the compounds except for cholesteryloxycarbonyl mitomycin C showed significant activity in vivo against a L1210 leukemia system at a relatively low dose range. These derivatives showed enzyme-mediated conversion to the parent compound in rat plasma and liver homogenate, while they were chem. stable in neutral aqueous media. Essentially no bioactivation was observed for cholesteryloxycarbonyl mitomycin C. Species differences were observed in these bioactivation phenomena. These results suggested the potential utility of the derivatives as lipophilic prodrugs. In the experiment, the researchers used many compounds, for example, Chloroformicacidn-nonylester (cas: 57045-82-6Application of 57045-82-6).

Chloroformicacidn-nonylester (cas: 57045-82-6) belongs to organic chlorides. An organic chloride is an organic compound containing at least one covalently bonded atom of chlorine. Their wide structural variety and divergent chemical properties lead to a broad range of names and applications. 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 of 57045-82-6

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