Month: November 2022

Experimental investigation of reactive extraction of levulinic acid from aqueous solutions was written by Kumar, A.;Shende, D. Z.;Wasewar, K. L.. And the article was included in Chemical and Biochemical Engineering Quarterly in 2021.Recommanded Product: 5137-55-3 The following contents are mentioned in the article:

The separation of levulinic acid from aqueous solutions is costly and non-ecofriendly in many cases. The major concerns are the low concentration of levulinic acid in fermentation broths and industrial downstreams. In this study, reactive extraction of levulinic acid from aqueous phase is proposed and its efficacy was investigated. Various extractants viz. tri-Bu phosphate, trioctylamine, and trioctylmethylammonium chloride along with i-octanol as a diluent were used. The extent of separation was investigated and various performance parameters like extraction efficiency, distribution coefficient, equilibrium complexation constant, and loading ratio were estimated The number of transfer units, diffusivity, and mass transfer considerations were also discussed in the reactive separation system. Finally, the conceptual method was provided for the separation of levulinic acid using efficient reactive separation This study involved multiple reactions and reactants, such as N-Methyl-N,N-dioctyloctan-1-aminium chloride (cas: 5137-55-3Recommanded Product: 5137-55-3).

N-Methyl-N,N-dioctyloctan-1-aminium chloride (cas: 5137-55-3) 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.Recommanded Product: 5137-55-3

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

Soluble maleimide prepolymers containing 1,3,5-triazine groups as composite resin matrices: synthesis, characterization, and evaluation was written by Dolui, Swapan K.. And the article was included in Angewandte Makromolekulare Chemie in 1991.Quality Control of 4,6-Dichloro-N-phenyl-1,3,5-triazin-2-amine The following contents are mentioned in the article:

Low-mol.-weight amine-terminated monomaleimide prepolymers containing 1,3,5-triazine groups as well as ether linkages were prepared by reacting benzophenonetetracarboxylic dianhydride, diamines containing 1,3,5-triazine groups, and maleic anhydride. These reactive prepolymers were soluble in low-boiling solvents such as CHCl₃, THF, etc. They were characterized by elemental anal., IR and NMR spectroscopy, vapor pressure osmometry, and viscosity. On heating at 180-190°, these prepolymers underwent simultaneous chain extension by Michael addition reaction and crosslinking by mutual reaction between their amine-terminated and maleimide-terminated ends. The cured polymers were thermostable, and the thermal behavior was studied by TG, DTA, and isothermal aging. Laminates fabricated using these prepolymers and carbon fiber reinforcement were evaluated by flexural strength and interlaminar shear strength. This study involved multiple reactions and reactants, such as 4,6-Dichloro-N-phenyl-1,3,5-triazin-2-amine (cas: 2272-40-4Quality Control of 4,6-Dichloro-N-phenyl-1,3,5-triazin-2-amine).

4,6-Dichloro-N-phenyl-1,3,5-triazin-2-amine (cas: 2272-40-4) 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. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. However, the extent of chlorination is difficult to control.Quality Control of 4,6-Dichloro-N-phenyl-1,3,5-triazin-2-amine

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

Designed Boron-Rich Polymeric Nanoparticles Based on Nano-ion Pairing for Boron Delivery was written by Li, Jianwei;Janouskova, Olga;Fernandez-Alvarez, Roberto;Mesikova, Sona;Tosner, Zdenek;Kereiche, Sami;Uchman, Mariusz;Matejicek, Pavel. And the article was included in Chemistry – A European Journal in 2020.Synthetic Route of C25H54ClN The following contents are mentioned in the article:

Boron-rich particles with the boron fraction ca.10-20 wt % of controllable shape and size that can be easily prepared via simple ion co-assembly are promising material for tumor treatment by boron neutron capture therapy. Electroneutral, dynamic core-shell polymeric nanoparticles were prepared by co-assembly of cationic PEO-block-PGEA diblock copolymer with sodium closo-dodecaborate, Na₂[B₁₂H₁₂]. This is the first example of polymer nanoparticles based on [B₁₂H₁₂]^2-nano-ion pairing. The high [B₁₂H₁₂]^2- loading is proven by calorimetry at physiol. salt concentration As a result of rational design, rod-, worm- and sphere-like particles were produced and further tested using human glioblastoma and cervical carcinoma cell lines. Rod-like particles yielded the highest internalization capability in all tested cell lines. This study involved multiple reactions and reactants, such as N-Methyl-N,N-dioctyloctan-1-aminium chloride (cas: 5137-55-3Synthetic Route of C25H54ClN).

N-Methyl-N,N-dioctyloctan-1-aminium chloride (cas: 5137-55-3) 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).Synthetic Route of C25H54ClN

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

Research on extraction of zinc from spent pickling solution using Aliquat 336 was written by Wang, Yongmi;He, Yuan;Yin, Shaohua;Long, Hailin;Li, Shiwei. And the article was included in Hydrometallurgy in 2020.SDS of cas: 5137-55-3 The following contents are mentioned in the article:

A review. Zinc and iron were separated from the spent pickling solution by extraction with Me trioctyl ammonium chloride (Aliquat 336). The purpose of the extraction experiment is to determine a variety of parameters (e.g. addition of octanol, contact time, phase ratio, [H⁺] concentration and Aliquat 336 concentration). Under optimal extraction conditions, the zinc extraction in one stage was above 92.4% and the separation coefficient β_Zn/Fe could reach 273 with initial zinc concentration 17.6 g/L, iron concentration 141.1 g/L and [H⁺] = 1.4 M. The zinc extraction mechanism was analyzed FT-IR spectroscopy and slope method. Zn(II) after extracting was comparative studied using different stripping agents. Recycling tests were also carried out, indicating that the extractant had a stable extraction performance, retaining 91.2% extraction efficiency of fresh extractant after 5 cycles. This study involved multiple reactions and reactants, such as N-Methyl-N,N-dioctyloctan-1-aminium chloride (cas: 5137-55-3SDS of cas: 5137-55-3).

N-Methyl-N,N-dioctyloctan-1-aminium chloride (cas: 5137-55-3) 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. 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).SDS of cas: 5137-55-3

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

Bayesian Models Leveraging Bioactivity and Cytotoxicity Information for Drug Discovery was written by Ekins, Sean;Reynolds, Robert C.;Kim, Hiyun;Koo, Mi-Sun;Ekonomidis, Marilyn;Talaue, Meliza;Paget, Steve D.;Woolhiser, Lisa K.;Lenaerts, Anne J.;Bunin, Barry A.;Connell, Nancy;Freundlich, Joel S.. And the article was included in Chemistry & Biology (Oxford, United Kingdom) in 2013.Product Details of 2272-40-4 The following contents are mentioned in the article:

Identification of unique leads represents a significant challenge in drug discovery. This hurdle is magnified in neglected diseases such as tuberculosis. We have leveraged public high-throughput screening (HTS) data to exptl. validate a virtual screening approach employing Bayesian models built with bioactivity information (single-event model) as well as bioactivity and cytotoxicity information (dual-event model). We virtually screened a com. library and exptl. confirmed actives with hit rates exceeding typical HTS results by one to two orders of magnitude. This initial dual-event Bayesian model identified compounds with antitubercular whole-cell activity and low mammalian cell cytotoxicity from a published set of antimalarials. The most potent hit exhibits the in vitro activity and in vitro/in vivo safety profile of a drug lead. These Bayesian models offer significant economies in time and cost to drug discovery. This study involved multiple reactions and reactants, such as 4,6-Dichloro-N-phenyl-1,3,5-triazin-2-amine (cas: 2272-40-4Product Details of 2272-40-4).

4,6-Dichloro-N-phenyl-1,3,5-triazin-2-amine (cas: 2272-40-4) 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.Product Details of 2272-40-4

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

An Activatable Polymeric Reporter for Near-Infrared Fluorescent and Photoacoustic Imaging of Invasive Cancer was written by Li, Qing;Li, Shenhua;He, Shasha;Chen, Wan;Cheng, Penghui;Zhang, Yan;Miao, Qingqing;Pu, Kanyi. And the article was included in Angewandte Chemie, International Edition in 2020.Recommanded Product: 95-88-5 The following contents are mentioned in the article:

Discriminative detection of invasive and noninvasive breast cancers is crucial for their effective treatment and prognosis. However, activatable probes able to do so in vivo are rare. Herein, we report an activatable polymeric reporter (P-Dex) that specifically turns on near-IR (NIR) fluorescent and photoacoustic (PA) signals in response to the urokinase-type plasminogen activator (uPA) overexpressed in invasive breast cancer. P-Dex has a renal-clearable dextran backbone that is linked with a NIR dye caged with an uPA-cleavable peptide substrate. Such a mol. design allows P-Dex to passively target tumors, activate NIR fluorescence and PA signals to effectively distinguish invasive MDA-MB-231 breast cancer from noninvasive MCF-7 breast cancer, and ultimately undergo renal clearance to minimize the toxicity potential. Thus, this polymeric reporter holds great promise for the early detection of malignant breast cancer. This study involved multiple reactions and reactants, such as 4-Chlororesorcinol (cas: 95-88-5Recommanded Product: 95-88-5).

4-Chlororesorcinol (cas: 95-88-5) 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. 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.Recommanded Product: 95-88-5

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

Insight into the Folding and Cooperative Multi-Recognition Mechanism in Supramolecular Anion-Binding Catalysis was written by Piekarski, Dariusz G.;Steinforth, Pascal;Gomez-Martinez, Melania;Bamberger, Julia;Ostler, Florian;Schoenhoff, Monika;Garcia Mancheno, Olga. And the article was included in Chemistry – A European Journal in 2020.Formula: C4H12ClN The following contents are mentioned in the article:

H-bond donor catalysts able to modulate the reactivity of ionic substrates for asym. reactions have gained great attention in the past years, leading to the development of cooperative multidentate H-bonding supramol. structures. However, there is still a lack of understanding of the forces driving the ion recognition and catalytic performance of these systems. Herein, insight into the cooperativity nature, anion binding strength, and folding mechanism of a model chiral triazole catalyst is presented. Our combined exptl. and computational study revealed that multi-interaction catalysts exhibiting weak binding energies (≈3-4 kcal mol^-1) can effectively recognize ionic substrates and induce chirality, while strong dependencies on the temperature and solvent were quantified. These results are key for the future design of catalysts with optimal anion binding strength and catalytic activity in target reactions. This study involved multiple reactions and reactants, such as Tetramethylammonium chloride (cas: 75-57-0Formula: C4H12ClN).

Tetramethylammonium chloride (cas: 75-57-0) 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).Formula: C4H12ClN

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

Sequential condensation/biannulation reactions of β-(2-aminophenyl)-α,β-ynones with 1,3-dicarbonyls was written by Marsicano, Vincenzo;Arcadi, Antonio;Chiarini, Marco;Fabrizi, Giancarlo;Goggiamani, Antonella;Iazzetti, Antonia. And the article was included in Organic & Biomolecular Chemistry in 2021.Reference of 638-07-3 The following contents are mentioned in the article:

A divergent domino condensation/biannulation reaction of β-(2-aminophenyl) α,β-ynones with 1,3-dicarbonyls to construct a polycyclic 4H-pyrano[3,4-c]quinoline core was developed. The p-TsOH·H₂O catalyzed reaction of β-(2-aminophenyl) α,β-ynones with β-ketoesters in ethanol proceeded with good to excellent yields to provide a simple and effective method for the synthesis of functionalized 4H-pyrano[3,4-c]quinolinones. Further elaboration of these latter derivatives with an excess of 20% NH₄OH in EtOH at 50°C helped to achieve the synthesis of the perlodinine analogs benzo[c][2,7]naphthyridin-4(3H)-one derivatives in high yields. Moreover, the p-TsOH·H₂O mediated reaction of β-(2-aminophenyl) α,β-ynones with β-di-ketones led to the formation of a variety of structurally diverse 4H-pyrano[3,4-c]quinoline polycyclic ketals by the incorporation of an alc. solvent mol. in a cascade fashion. This study involved multiple reactions and reactants, such as Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3Reference of 638-07-3).

Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3) 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.Reference of 638-07-3

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

Design and development of novel thiazolidin-4-one-1,3,5-triazine derivatives as neuro-protective agent against cerebral ischemia-reperfusion injury in mice via attenuation of NF-kB was written by Lu, Min;Qi, Yujun;Han, Yu;Yi, Qiong;Xu, Lei;Sun, Wenlin;Ni, Guihua;Ni, Xiaoyu;Xu, Changsong. And the article was included in Chemical Biology & Drug Design in 2020.Synthetic Route of C9H6Cl2N4 The following contents are mentioned in the article:

The present study enumerates the discovery and development of novel thiazolidin-4-one-1,3,5-triazine as neuro-protective agent against cerebral ischemia-reperfusion injury in mice. These compounds showed significant inhibition of NF-kB transcriptional activity in LPS-stimulated RAW264.7 cells, displaying compound 8k as most potent inhibitor among the tested derivative The compound 8k was further studied in in vivo middle cerebral artery occlusion (MCAO) mice model for neuro-protective action. Results suggest that compound 8k causes attenuation of inflammation (TNF-α, IL-β, and IL-6), oxidative stress (SOD, GSH, and MDA), and apoptosis (Bcl-2, Bax, and cleaved caspase-3) in MCAO mice in concentration-dependent manner. Collectively, our results documented that compound 8k pre-treatment protects cerebral I/R. This novel lead scaffold may be helpful for investigation of new neuro-protective agent by inactivation of NF-kB. This study involved multiple reactions and reactants, such as 4,6-Dichloro-N-phenyl-1,3,5-triazin-2-amine (cas: 2272-40-4Synthetic Route of C9H6Cl2N4).

4,6-Dichloro-N-phenyl-1,3,5-triazin-2-amine (cas: 2272-40-4) 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.Synthetic Route of C9H6Cl2N4

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

Converting the 3-quinuclidinone reductase from Agrobacterium tumefaciens into the ethyl 4-chloroacetoacetate reductase by site-directed mutagenesis was written by Liu, Di;Gou, Linbo;Bai, Yajun;Fan, Tai-Ping;Zheng, Xiaohui;Cai, Yujie. And the article was included in Biotechnology and Applied Biochemistry in 2022.Synthetic Route of C6H9ClO3 The following contents are mentioned in the article:

In this study, the 3-quinuclidinone reductase from Agrobacterium tumefaciens (AtQR) was modified by site-directed mutagenesis. And we further obtained a saturation mutant library in which the residue 197 was mutated. A single-point mutation converted the wild enzyme that originally had no catalytic activity in reduction of Et 4-chloroacetoacetate (COBE) into an enzyme with catalytic activity. The results of enzyme activity assays showed that the seven variants could asym. reduce COBE to Et (S)-4-chloro-3-hydroxybutyrate ((S)-CHBE) with NADH as coenzyme. In the library, the variant E197N showed higher catalytic efficiency than others. The E197N was optimally active at pH 6.0 and 40°C, and the catalytic efficiency (k_cat/K_m) for COBE was 51.36 s^-1·mM^-1. This study showed that the substrate specificity of AtQR could be changed through site-directed mutagenesis at the residue 197. This study involved multiple reactions and reactants, such as Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3Synthetic Route of C6H9ClO3).

Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3) 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. Aryl chlorides may be prepared by the Friedel-Crafts halogenation, using chlorine and a Lewis acid catalyst.Synthetic Route of C6H9ClO3

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