Month: January 2023

Discovery of disubstituted xylylene derivatives as small molecule direct inhibitors of Keap1-Nrf2 protein-protein interaction was written by Abed, Dhulfiqar Ali;Lee, Sumi;Hu, Longqin. And the article was included in Bioorganic & Medicinal Chemistry in 2020.Related Products of 63624-28-2 This article mentions the following:

The Keap1-Nrf2-ARE system represents a crucial antioxidant defense mechanism that protects cells against reactive oxygen species. Targeting Keap1-Nrf2 protein-protein interaction (PPI) has become a promising drug target for several oxidative stress-related and inflammatory diseases including pulmonary fibrosis, chronic obstructive pulmonary disorder (COPD) and cancer chemoprevention. For the development of a potential therapeutic agent, drug-like properties and potency are important considerations. In this work, we focused on the modification of 4 as a lead through a mol. dissection strategy in an effort to improve its metabolic stability, leading to the discovery of a series of new disubstituted xylylene derivatives The preliminary SAR of 9a indicated that compound 21a containing S-methylated acetate moieties exhibited comparable potency to the lead compound 4 in a fluorescent polarization assay but with improved metabolic stability in the presence of human liver microsomes. In the experiment, the researchers used many compounds, for example, 2,4-Dimethoxybenzene-1-sulfonyl chloride (cas: 63624-28-2Related Products of 63624-28-2).

2,4-Dimethoxybenzene-1-sulfonyl chloride (cas: 63624-28-2) 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. 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.Related Products of 63624-28-2

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

Highly permeable and acid-resistant nanofiltration membrane fabricated by in-situ interlaced stacking of COF and polysulfonamide films was written by Lai, Wei;Shan, Linglong;Bai, Ju;Xiao, Luqi;Liu, Lu;Wang, Shunli;Gong, Lili;Jiao, Yang;Xie, Wei;Liu, Hongyan;Luo, Shuangjiang;Zhang, Suojiang. And the article was included in Chemical Engineering Journal (Amsterdam, Netherlands) in 2022.Reference of 61-73-4 This article mentions the following:

The fabrication of nanofiltration (NF) membranes with excellent acid resistance and high separation performance remains a tremendous challenge due to the lack of precise membrane structure manipulation. Herein, covalent organic frameworks (COFs), due to their abundant porosity and highly ordered structures, are employed to synthesize high-permeation nanofiltration membranes. An acid-stable COF layer and a polysulfonamide (PSA) layer were fabricated by in-situ interfacial polymerization (IP) upon the polyethersulfone (PES) ultrafiltration substrate in turns. The acquired COF-based composite membrane exhibited sub-nanometer pore size and excellent rare-earth ions separation performance due to the interlaced stacking between the COF and PSA layers, as well as the COF interlayer regulated IP process. Addnl., the composite membrane showed high rejection of >92.2% for trivalent rare-earth ions (RE³⁺) and high water permeance of >43.3 L h^-1 m^-2 bar^-1 at both pH = 6.8 and pH = 1, the superior separation performance can be ascribed to the high porosity and abundant transportation pathway provided by the COF layer and the interlaced stacking structure between the COF layer and the PSA layer. The facile membrane fabrication procedure, along with the excellent water permeation performance and acid resistance, render the composite membrane in this study applicable for a broad range of critical industrial and environmental processes. In the experiment, the researchers used many compounds, for example, 3,7-Bis(dimethylamino)phenothiazin-5-ium chloride (cas: 61-73-4Reference of 61-73-4).

3,7-Bis(dimethylamino)phenothiazin-5-ium chloride (cas: 61-73-4) 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. 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).Reference of 61-73-4

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

Rearrangement in the Synthesis of Annulated Lactams Starting from Benzothiazines was written by Stalling, Timo;Saak, Wolfgang;Martens, Juergen. And the article was included in European Journal of Organic Chemistry in 2013.Recommanded Product: 2-(3-Methoxyphenyl)acetyl chloride This article mentions the following:

The conversion of methoxyamides I [R¹ = R² = Me, R¹R² = (CH₂)₅ R³ = H, Me, none, R⁴ = H, 3-Me, 3-MeO, 3-Cl, 2-NO₂, X = (CH)_n, n = 0, 1], based on iminic 1,4-benzothiazines, has led to three different products depending on the substitution pattern. On the one hand, different types of unknown lactam systems with and without a rearrangement under ring contraction of the benzothiazine substructure, e.g., tetracyclic lactams II, were selectively obtained. In this investigation, annulated lactams without ring contraction were formed by oxidation of the sulfide group to a sulfone group in the benzothiazine skeleton. On the other hand, benzothiazoles, which are oxidation products, were isolated. The structures of all types of lactams were verified by X-ray diffraction. In the experiment, the researchers used many compounds, for example, 2-(3-Methoxyphenyl)acetyl chloride (cas: 6834-42-0Recommanded Product: 2-(3-Methoxyphenyl)acetyl chloride).

2-(3-Methoxyphenyl)acetyl chloride (cas: 6834-42-0) 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. 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.Recommanded Product: 2-(3-Methoxyphenyl)acetyl chloride

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

Additive-Controlled Divergent Synthesis of Indole and 4H-Benzo[d][1,3]oxazine Derivatives: Palladium-Catalyzed Carbonylative Cyclization of 2-Alkynylanilines and Benzyl Chlorides was written by Wang, Qi;Yao, Lingyun;Wang, Jian-Shu;Ying, Jun;Wu, Xiao-Feng. And the article was included in Journal of Organic Chemistry.Formula: C8H9Cl This article mentions the following:

A palladium-catalyzed divergent carbonylative synthesis of indoles and 4H-benzo[d][1,3]oxazines from 2-alkynylanilines and benzyl chlorides with benzene-1,3,5-triyl triformate (TFBen) as the CO source was developed. The reaction using AlCl₃ as the additive produced various indoles in high yields, while a series of 4H-benzo[d][1,3]oxazines were achieved in moderate yields with AcOH as the additive. In the experiment, the researchers used many compounds, for example, 1-(Chloromethyl)-3-methylbenzene (cas: 620-19-9Formula: C8H9Cl).

1-(Chloromethyl)-3-methylbenzene (cas: 620-19-9) 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. Aliphatic organochlorides are often alkylating agents as chlorine can act as a leaving group, which can result in cellular damage.Formula: C8H9Cl

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

Ruthenium(II) and rhodium(III) catalyzed asymmetric transfer hydrogenation (ATH) of acetophenone in isopropanol and in aqueous sodium formate using new chiral substituted aromatic monosulfonamide ligands derived from (1R,2R)-diaminocyclohexane was written by Cortez, Norma A.;Aguirre, Gerardo;Parra-Hake, Miguel;Somanathan, Ratnasamy. And the article was included in Tetrahedron: Asymmetry in 2008.Quality Control of 4-Butoxybenzene-1-sulfonyl chloride This article mentions the following:

A series of aromatic monosulfonamide ligands derived from (1R,2R)-diaminocyclohexane were synthesized with electron withdrawing and donating groups. These were complexed with Rh(Cp^*) or Ru(arene) and their catalytic efficiencies were compared in the ATH of acetophenone using sodium formate/water or isopropanol/KOH as the hydrogen source. Results suggest that substituents on the benzene ring of the sulfonamide have very little electronic impact on the enantioselectivity and mechanism of the reaction. 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. Organic chlorides can be used in production of: PVC, pesticides, chloromethane, teflon, insulators.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.Quality Control of 4-Butoxybenzene-1-sulfonyl chloride

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

Organic contaminants in human breast milk identified by non-targeted analysis was written by Tran, Cuong D.;Dodder, Nathan G.;Quintana, Penelope J. E.;Watanabe, Kayo;Kim, Jae H.;Hovell, Melbourne F.;Chambers, Christina D.;Hoh, Eunha. And the article was included in Chemosphere in 2020.Computed Properties of C8H10ClN This article mentions the following:

Understanding the health implications of human exposure to mixtures of chem. contaminants is aided by anal. methods that can screen for a broad range of both expected and unexpected compounds We performed a proof-of-concept anal. combining human breast milk, a biomonitoring matrix for determining contaminant exposure to mothers and infants, with a non-targeted method based on comprehensive two-dimensional gas chromatog. coupled to time-of-flight mass spectrometry (GCxGC/TOF-MS). A total of 172 presumably anthropogenic halogenated compounds and non-halogenated cyclic and aromatic compounds were tentatively identified in breast milk from San Diego, California through mass spectral database searches. Forty of the compounds were prioritized for confirmation based on halogenation or 100% frequency of detection, and the identities of 30 were verified using authentic standards Thirty-four (85%) of the prioritized contaminants are not typically monitored in breast milk surveys, and 31 (77%) are regulated in at least one market worldwide, indicating breast milk may be a useful biomonitoring matrix for non-targeted anal. and the assessment of human exposure to future emerging or undiscovered contaminants. In the experiment, the researchers used many compounds, for example, 2-Chloro-N,N-dimethylaniline (cas: 698-01-1Computed Properties of C8H10ClN).

2-Chloro-N,N-dimethylaniline (cas: 698-01-1) 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. 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 C8H10ClN

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

Modified TiO₂ nanotubes-zeolite composite photocatalyst: Characteristics, microstructure and applicability for degrading triclocarban was written by Arifin, Siti Nor Hidayah;Radin Mohamed, Radin Maya Saphira;Al-Gheethi, Adel Ali;Wei, Lai Chin;Yashni, G.;Fitriani, Nurina;Naushad, Mu.;Albadarin, Ahmad B.. And the article was included in Chemosphere in 2022.HPLC of Formula: 101-20-2 This article mentions the following:

The study explored the characteristics and effectiveness of modified TiO₂ nanotubes with zeolite as a composite photocatalyst (MTNZC) for the degradation of triclocarban (TCC) from the aqueous solution MTNZC samples have been produced via electrochem. anodisation (ECA) followed by electrophoretic deposition (EPD). Three independent factors selected include MTNZC size (0.5-1 cm2), pH (3-10), and irradiation time (10-60 min). The observation revealed that the surface of Ti substrate by the 40 V of anodisation and 3 h of calcination was covered with the array ordered, smooth and optimum elongated nanotubes with average tube length was approx. 5.1μm. EDS anal. proved the presence of Si, Mg, Al, and Na on MTNZC due to the chem. composition present in the zeolite. The average crystallite size of TiO₂ nanotubes increased from 2.07 to 3.95 nm by increasing anodisation voltage (10, 40, and 60 V) followed by 450°C of calcination for 1, 3, and 6 h, resp. The optimization by RSM shows the F-value (36.12), the p-value of all responses were less than 0.0001, and the 95% confidence level of the model by all the responses indicated the model was significant. The R2 in the range of 0.9433-0.9906 showed the suitability of the model to represent the actual relationship among the parameters. The photocatalytic degradation rate of TCC from the first and the fifth cycles were 94.2 and 77.4%, indicating the applicability of MTNZC to be used for several cycles. In the experiment, the researchers used many compounds, for example, 1-(4-Chlorophenyl)-3-(3,4-dichlorophenyl)urea (cas: 101-20-2HPLC of Formula: 101-20-2).

1-(4-Chlorophenyl)-3-(3,4-dichlorophenyl)urea (cas: 101-20-2) 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. 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).HPLC of Formula: 101-20-2

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

Effect of oil blends derived from catalytic pyrolysis of waste cooking oil on diesel engine performance, emissions and combustion characteristics was written by Gad, M. S.;Abu-Elyazeed, O. S.;Mohamed, M. A.;Hashim, A. M.. And the article was included in Energy (Oxford, United Kingdom) in 2021.COA of Formula: C18H37Cl This article mentions the following:

The purpose of this study is to study the effect of pyrolysis oil from economical feedstock waste cooking oil on engine performance, emissions and combustion characteristics. Effect of potassium and sodium hydroxide catalysts concentrations of 0.5, 1, 3, 5, 7 and 10% by weight on the oil yield was investigated. NaOH catalyst achieved the highest oil yield of 70% weight at concentration of 1% weight Pyrolysis oil was mixed with diesel oil in volume percentages of 0, 20, 40, 60, 80 and 100%. Oil blends were tested in a diesel engine at variable loads and rated speed of 1500 rpm. The higher oil blend ratio decreased the thermal efficiency, NOx and CO emissions about diesel oil. Increase of oil percentage in the blends led to the increase of specific fuel consumption, smoke and HC emissions about diesel oil. The oil blend B100 achieved the maximum decreases in thermal efficiency, CO and NOx emission by 29, 45 and 65%, resp. about pure diesel. Also, pure pyrolysis oil B100 showed the maximum increases in specific fuel consumption, HC and smoke emissions by 28.3, 33 and 11%, resp. related to diesel oil. Pyrolysis WCO could be alternative fuels in diesel engines. In the experiment, the researchers used many compounds, for example, 1-Chlorooctadecane (cas: 3386-33-2COA of Formula: C18H37Cl).

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. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. However, the extent of chlorination is difficult to control.COA of Formula: C18H37Cl

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

1H-pyrrolo[2,3-b]pyridine: A new scaffold for human neutrophil elastase (HNE) inhibitors was written by Crocetti, Letizia;Giovannoni, Maria Paola;Schepetkin, Igor A.;Quinn, Mark T.;Khlebnikov, Andrei I.;Cantini, Niccolo;Guerrini, Gabriella;Iacovone, Antonella;Teodori, Elisabetta;Vergelli, Claudia. And the article was included in Bioorganic & Medicinal Chemistry in 2018.Application of 1711-11-1 This article mentions the following:

Human neutrophil elastase (HNE) is a potent serine protease belonging to the chymotrypsin family. It is an important target for the development of novel and selective inhibitors for the treatment of inflammatory diseases, especially pulmonary pathologies. Here, we report the synthesis and biol. evaluation of a new series of HNE inhibitors with a pyrrolo[2,3-b]pyridine scaffold, which is an isomer of our previously reported indazoles, in order to assess how a shift of the nitrogen from position 2 to position 7 influences activity. The majority of new compounds were effective HNE inhibitors and had IC₅₀ values in the micromolar/submicromolar range, with some compounds active in low nanomolar levels. For example, 2a and 2b inhibited HNE with IC₅₀ values of 15 and 14 nM, resp. Mol. modeling of compounds differing in the position of heteroatom(s) in the bicyclic moiety and in the oxadiazole ring demonstrated that the calculated geometries of enzyme-inhibitor complexes were in agreement with the observed biol. activities. Docking experiments showed that orientation of the active pyrrolo[2,3-b]pyridines in the HNE catalytic triad Ser195-His57-Asp102 correlated with effectiveness of the inhibitor interaction with the enzyme. Thus, the pyrrolo[2,3-b]pyridine scaffold represents a novel scaffold for the development of potent HNE inhibitors. In the experiment, the researchers used many compounds, for example, 3-Cyanobenzoyl chloride (cas: 1711-11-1Application of 1711-11-1).

3-Cyanobenzoyl chloride (cas: 1711-11-1) 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. Aryl chlorides may be prepared by the Friedel-Crafts halogenation, using chlorine and a Lewis acid catalyst.Application of 1711-11-1

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

Detection of multiple endocrine-disrupting chemicals in milk: Improved and safe high performance liquid chromatography tandem mass spectrometry method was written by Yu, Yunhan;Kuang, Mengya;Zheng, Baohua;Wang, Meiling;Liu, Zhenqiang;Xu, Huilan;Wang, Jianwu. And the article was included in Journal of Separation Science in 2022.Formula: C13H9Cl3N2O This article mentions the following:

Herein, an improved method for detecting the endocrine-disrupting chems. in milk is presented, which is based on high performance liquid chromatog. tandem mass spectrometry, coupled with a quick, effective, and safe method. The linearity of the proposed method was in the range of 0.05-100μg/L, and all correlation coefficients were â‰?.9973. At three concentration levels, the spiked recoveries ranged from 77.7 to 107.5%, relative standard deviations ranged from 0.2 to 14.6%, limits of quantitation ranged from 0.1 to 40μg/kg, limits of detection ranged from 0.03 to 13.3μg/kg. The proposed method for the identification and quantitation of 26 endocrine disruptors present in milk is not only easy, fast, and cost-efficient but also provides a reference for the detection of various endocrine disruptors in milk and other dairy products. In the experiment, the researchers used many compounds, for example, 1-(4-Chlorophenyl)-3-(3,4-dichlorophenyl)urea (cas: 101-20-2Formula: C13H9Cl3N2O).

1-(4-Chlorophenyl)-3-(3,4-dichlorophenyl)urea (cas: 101-20-2) 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.Formula: C13H9Cl3N2O

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