Tag: 300-400

Adsorption modification of metalized materials was written by Baranova, N. V.;Kareeva, V. M.;Temnikova, S. A.;Voronchikhina, L. I.. And the article was included in Tsvetnye Metally (Moscow, Russian Federation) in 2005.Application In Synthesis of 1-Dodecylpyridin-1-ium bromide This article mentions the following:

Feasibility of using quaternary salts of pyridine was studied for adsorption modification of aluminized glass fibers in order to create a hydrophobic protective layer to decrease contact resistance between fibers. All studied pyridine salts can be used for these purposes in a form of aqueous solutions with concentrations not exceeding the critical concentration of micellization. Presence of nanofilms of surface-active substance on the surface of fiber decreases friction and slipping forces and increases dispersing capacity. In the experiment, the researchers used many compounds, for example, 1-Dodecylpyridin-1-ium bromide (cas: 104-73-4Application In Synthesis of 1-Dodecylpyridin-1-ium bromide).

1-Dodecylpyridin-1-ium bromide (cas: 104-73-4) belongs to pyridine derivatives. Pyridines are an important class of heterocycles and occur in polysubstituted forms in many naturally occurring biologically active compounds, drug molecules and chiral ligands. Reduced pyridines, namely tetrahydropyridines, dihydropyridines and piperidines, are found in numerous natural and synthetic compounds. The synthesis and reactivity of these compounds have often been driven by the fact many of these compounds have interesting and unique pharmacological properties. Application In Synthesis of 1-Dodecylpyridin-1-ium bromide

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Aggregation, adsorption, counterion binding, thermal and scattering behavior of metallosurfactant cis-[Co(en)₂(C₁₂H₂₅NH₂)Cl](NO₃)₂ was written by Wagay, T. A.;Dey, J.;Kumar, S.;Aswal, V. K.;Ismail, K.. And the article was included in Colloids and Surfaces, A: Physicochemical and Engineering Aspects in 2016.Recommanded Product: 104-73-4 This article mentions the following:

Amphiphilic metal complexes, better known as metallosurfactants, are the emerging class of materials with a range of properties inherent to both metal complexes and surfactants. Studying the fundamental aspects of the adsorption and aggregation of these novel surfactants is necessary by looking at their potential applications. Cis-Chlorobis(ethylenediamine)dodecylaminecobalt(III) nitrate (CDCN) was synthesized and its critical micelle concentration (cmc) values were determined in aqueous medium as a function of sodium nitrate concentration by using surface tension, conductivity and spectrophotometric methods. The cmc of CDCN is equal to 1.4 mmol kg^-1 and compared to conventional ionic surfactants with same hydrocarbon chain length, CDCN has properties of a better surfactant. The counterion binding constant of CDCN is found to be nearly 0.8. Dynamic light scattering and small angle neutron scattering data showed that the size of the metallomicelle is strongly dependent on the added salt concentration, but not above 0.04 mol kg^-1 NaNO₃. The aggregates of CDCN have large size and from SANS data anal. they appear to exist as micellar clusters. The surface excess and area per mol. of CDCN at the cmc are equal to 2.59 × 10^-6 mol m^-2 and 0.64 nm², resp. In the experiment, the researchers used many compounds, for example, 1-Dodecylpyridin-1-ium bromide (cas: 104-73-4Recommanded Product: 104-73-4).

1-Dodecylpyridin-1-ium bromide (cas: 104-73-4) belongs to pyridine derivatives. Pyridine is diamagnetic and has a diamagnetic susceptibility of −48.7 × 10−6 cm3·mol−1.The molecular electric dipole moment is 2.2 debyes. The standard enthalpy of formation is 100.2 kJ·mol−1 in the liquid phase and 140.4 kJ·mol−1 in the gas phase. Pyridine derivatives are also useful as small-molecule α-helix mimetics that inhibit protein-protein interactions, as well as functionally selective GABA ligands.Recommanded Product: 104-73-4

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Utilizing surfactants to control the sorption, desorption, and biodegradation of phenanthrene in soil-water system was written by Jin, Haiwei;Zhou, Wenjun;Zhu, Lizhong. And the article was included in Journal of Environmental Sciences (Beijing, China) in 2013.Reference of 104-73-4 This article mentions the following:

An integrative technol. including the surfactant enhanced sorption and subsequent desorption and biodegradation of phenanthrene in the soil-water system was introduced and tested. For slightly contaminated agricultural soils, cationic-nonionic mixed surfactantenhanced sorption of organic contaminants onto soils could reduce their transfer to plants, therefore safe-guarding agricultural production After planting, residual surfactants combined with added nonionic surfactant could also promote the desorption and biodegradation of residual phenanthrene, thus providing a cost-effective pollution remediation technol. Our results showed that the cationic-nonionic mixed surfactants dodecylpyridinium bromide (DDPB) and Triton X-100 (TX100) significantly enhanced soil retention of phenanthrene. The maximum sorption coefficient K_d* of phenanthrene for contaminated soils treated by mixed surfactants was about 24.5 times that of soils without surfactant (K_d) and higher than the combined effects of DDPB and TX100 individually, which was about 16.7 and 1.5 times K_d, resp. On the other hand, TX100 could effectively remove phenanthrene from contaminated soils treated by mixed surfactants, improving the bioavailability of organic pollutants. The desorption rates of phenanthrene from these treated soils were greater than 85% with TX100 concentration above 2000 mg/L and approached 100% with increasing TX100 concentration The biodegradation rates of phenanthrene in the presence of surfactants reached over 95% in 30 days. The mixed surfactants promoted the biodegradation of phenanthrene to some extent in 10-22 days, and had no obvious impact on phenanthrene biodegradation at the end of the experiment Results obtained from this study provide some insight for the production of safe agricultural products and a remediation scheme for soils slightly contaminated with organic pollutants. In the experiment, the researchers used many compounds, for example, 1-Dodecylpyridin-1-ium bromide (cas: 104-73-4Reference of 104-73-4).

1-Dodecylpyridin-1-ium bromide (cas: 104-73-4) belongs to pyridine derivatives. Pyridines are an important class of heterocycles and occur in polysubstituted forms in many naturally occurring biologically active compounds, drug molecules and chiral ligands. Pyridine groups exist in countless molecules, and their applications include catalysis, drug design, molecular recognition, and natural product synthesis.Reference of 104-73-4

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Synthesis and Evaluation of a Pyridinium-Based Ionic Liquid-Type Surfactant as a New Low-Dosage Methane Hydrate Inhibitor was written by Romero-Martinez, Ascencion;Hernandez-Guerrero, Erika;Ramirez-Jaramillo, Edgar;Martinez-Palou, Rafael. And the article was included in Energy & Fuels in 2020.Application of 104-73-4 This article mentions the following:

This work reports the synthesis of a new low-dosage kinetic hydrate inhibitor (KHI) based on the ionic liquid C12PyBr (N-dodecyl pyridinium bromide), which was characterized and evaluated in order to determine its inhibition performance. By means of a microwave-assisted reaction scheme, a high-purity product was obtained and the com. product Inhibex 101 (IC) was employed as a comparison reference at 0.1, 0.5,, and 1.0 wt % in aqueous solution to test the inhibition of methane hydrate formation. In this sense, it was discovered that, by using C12PyBr at 0.1 wt %, the formation of methane hydrates was inhibited at a subcooling of 11.2 K and at a concentration one order of magnitude lower than that used with Inhibex 101 to reach the same performance as KHI. This fact could be used as an attractive factor when establishing gas hydrate inhibition plans for offshore and deep-water scenarios. In the experiment, the researchers used many compounds, for example, 1-Dodecylpyridin-1-ium bromide (cas: 104-73-4Application of 104-73-4).

1-Dodecylpyridin-1-ium bromide (cas: 104-73-4) belongs to pyridine derivatives. The ring atoms in the pyridine molecule are sp2-hybridized. The nitrogen is involved in the π-bonding aromatic system using its unhybridized p orbital. The lone pair is in an sp2 orbital, projecting outward from the ring in the same plane as the σ bonds. Pyridine groups exist in countless molecules, and their applications include catalysis, drug design, molecular recognition, and natural product synthesis.Application of 104-73-4

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Effect of alkyl chain length and halide ions on the corrosion inhibition potential of imidazolium and pyridinium based ionic liquids: Computational studies was written by Alrefaee, Salhah H.. And the article was included in Journal of Molecular Liquids in 2021.Reference of 104-73-4 This article mentions the following:

In the present investigation, thirty imidazolium and pyridinium based ionic liquids are undertaken for DFT based computational study to demonstrate the anticorrosive potential. Results showed that imidazolium and pyridinium based ionic liquids act as effective anticorrosive materials and their corrosion inhibition performance depends on the nature of alkyl groups and halide ions. Among the studied imidazolium based ionic liquids, 3-octyl-1H-imidazol-3-ium chloride (IM-C8-Cl), 3-hexadecyl-1H-imidazol-3-ium bromide (IM-C16-Br) and 3-butyl-1H-imidazol-3-ium iodide (IM-C4-I) behave as the best among the chloro, bromo and iodide substituted imidazolium based ionic liquids, resp. In the pyridinium based ionic liquids, 1-hexadecylpyridin-1-ium chloride (Pyr-C16-Cl), 1-dodecylpyridin-1-ium bromide (Pyr-C12-Br) and 1-octylpyridin-1-ium iodide (Pyr-C8-I) act as the best corrosion inhibitors among the chloro, bromo and iodide substituted pyridinium based ionic liquids, resp. Adsorption behavior of pyridinium and imidazolium based ionic liquids and corrosion inhibition using them has also been proposed in the present study. In the experiment, the researchers used many compounds, for example, 1-Dodecylpyridin-1-ium bromide (cas: 104-73-4Reference of 104-73-4).

1-Dodecylpyridin-1-ium bromide (cas: 104-73-4) belongs to pyridine derivatives. Pyridine’s the lone pair does not contribute to the aromatic system but importantly influences the chemical properties of pyridine, as it easily supports bond formation via an electrophilic attack. Several pyridine derivatives play important roles in biological systems. While its biosynthesis is not fully understood, nicotinic acid (vitamin B3) occurs in some bacteria, fungi, and mammals.Reference of 104-73-4

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

QSPR with extended topochemical atom (ETA) indices, 3: Modeling of critical micelle concentration of cationic surfactants was written by Roy, Kunal;Kabir, Humayun. And the article was included in Chemical Engineering Science in 2012.Category: pyridine-derivatives This article mentions the following:

The ability of surfactant mols. to facilitate solubilization of essential chem. entities accounts for their wide application in the pharmaceutical industry. The solubilization ability begins at concentrations exceeding the critical micelle concentration (CMC) which in turn is influenced by the mol. structure of the surfactants. Here, attempts have been made to explore the essential mol. fragments determining CMC of cationic surfactants using in silico technique. Different classes of descriptors (ETA and non-ETA) were correlated with the CMC data of a series of cationic surfactants to develop predictive models. Models were developed using genetic function approximation technique and were extensively validated employing different validation statistics. Comparative anal. was performed between the best model developed using the ETA descriptors and that obtained with the non-ETA variables. The results revealed that the external predictive potential of the ETA model was superior to the non-ETA model. The results also indicated that the ETA model could efficiently determine the CMC profile of the untested mols. Finally, the two classes of descriptors were combined and the QSPR model thus obtained exhibited improved external predictive potential. The ETA descriptors implicated the importance of mol. size and their degree of unsaturation while the non-ETA descriptors signified impact of the bond order and the number of fragments bearing hydrogen atoms attached to carbon atoms with variable hybridization. Thus, addition of ETA descriptors improved the model quality extensively identifying essential mol. fragments contributing to their CMC profile and can be comprehensively utilized for property prediction of new cationic surfactants. In the experiment, the researchers used many compounds, for example, 1-Dodecylpyridin-1-ium bromide (cas: 104-73-4Category: pyridine-derivatives).

1-Dodecylpyridin-1-ium bromide (cas: 104-73-4) belongs to pyridine derivatives. Pyridine has a dipole moment and a weaker resonant stabilization than benzene (resonance energy 117 kJ·mol−1 in pyridine vs. 150 kJ·mol−1 in benzene). Pyridine, its benzo and pyridine-based compounds play diverse roles in organic chemistry. Pyridine-based materials are valued for their optical and physical properties as well as their medical potential. Category: pyridine-derivatives

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Development and characterization of a fully human antibody targeting SCF/c-kit signaling was written by Kim, Jin-Ock;Kim, Ha-Neul;Kim, Kwang-Hyeok;Baek, Eun Ji;Park, Jeong-Yang;Ha, Kyungsoo;Heo, Deok Rim;Seo, Min-Duk;Park, Sang Gyu. And the article was included in International Journal of Biological Macromolecules in 2020.Reference of 104-73-4 This article mentions the following:

CD117/c-kit, a tyrosine kinase receptor, plays a critical role in hematopoiesis, pigmentation, and fertility. The overexpression and activation of c-kit are thought to promote tumor growth and have been reported in various cancers, including leukemia, glioblastoma and mastocytosis. To disrupt the SCF/c-kit signaling axis in cancer, we generated a c-kit antagonist human antibody (NN2101) that binds to domain 2/3 of c-kit. In addition, the examination of binding affinity using surface plasmon resonance (SPR) assay showed that NN2101 can bind to c-kit of monkeys (K_D = 2.92 x 10^-10 M), rats (K_D = 1.68 x 10^-6 M), mice (K_D = 11.5 x 10^-9 M), and humans (K_D = 2.83 x 10^-12 M). We showed that NN2101 does not cause antibody-dependent cell-mediated cytotoxicity and complement-dependent cytotoxicity. The immunogenicity of NN2101 was similar to that of bevacizumab. Furthermore, the crystal structure of NN2101 Fab was determined and the structure of NN2101 Fab:c-kit complex was modeled. Structural information, as well as mutagenesis results, revealed that NN2101 can bind to the SCF-binding regions of c-kit. Collectively, we generated a c-kit neutralizing human antibody (NN2101) for the treatment of erythroleukemia and characterized its biophys. properties. NN2101 can potentially be used as a therapeutic antibody to treat different cancers. In the experiment, the researchers used many compounds, for example, 1-Dodecylpyridin-1-ium bromide (cas: 104-73-4Reference of 104-73-4).

1-Dodecylpyridin-1-ium bromide (cas: 104-73-4) belongs to pyridine derivatives. Pyridine has a conjugated system of six π electrons that are delocalized over the ring. The molecule is planar and, thus, follows the Hückel criteria for aromatic systems. Pyridine, its benzo and pyridine-based compounds play diverse roles in organic chemistry. Pyridine-based materials are valued for their optical and physical properties as well as their medical potential. Reference of 104-73-4

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Hybrid ceramic beads synthesized from natural minerals and titanium dioxide for cleaning wastewater was written by Sata, Akiyoshi;Hirose, Masanao;Kurawaki, Junichi;Kusumoto, Yoshifumi;Hayakawa, Katumitu. And the article was included in Research Journal of Chemistry and Environment in 2006.Category: pyridine-derivatives This article mentions the following:

Porous hybrid ceramic beads were synthesized by burning at 1090°C in a reducing atm. They consisted of the natural mineral graphite silica (GS), the pyroclastic deposit “shirasu” and titanium dioxide. The beads bleached aqueous solutions of the dyes rhodamine B, acridine orange, methyl orange and methylene blue and degraded the surfactant dodecylpyridinium bromide and humic acid. The rate of dye decolorization was monitored using absorption spectra under UV irradiation and in the dark. The performance of repeatedly reused ceramic beads was comparable to that of new ceramic beads for decolorizing the dye solutions The rates for ceramic beads with different components and structures were compared. The effects of anatase titanium oxide on the ceramic surface and UV irradiation were not clear. The ceramic beads performed well when used to decolorize cattle urine pretreated with microorganisms. In the experiment, the researchers used many compounds, for example, 1-Dodecylpyridin-1-ium bromide (cas: 104-73-4Category: pyridine-derivatives).

1-Dodecylpyridin-1-ium bromide (cas: 104-73-4) belongs to pyridine derivatives. Pyridine has a conjugated system of six π electrons that are delocalized over the ring. The molecule is planar and, thus, follows the Hückel criteria for aromatic systems. One of the examples of pyridines is the well-known alkaloid lithoprimidine, which is an A3 adenosine receptor antagonist and N,N-dimethylaminopyridine (DMAP) analog, commonly used in organic synthesis.Category: pyridine-derivatives

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Change of the total toxicity of solutions of cationic surfactants during ozonization UV irradiation, and O₃/UV treatment was written by Goncharuk, V. V.;Vakulenko, V. F.;Shvadchina, Yu. O.;Starodub, N. F.;Kanyuk, N. I.;Ivashkevich, S. P.. And the article was included in Khimiya i Tekhnologiya Vody in 2007.Recommanded Product: 1-Dodecylpyridin-1-ium bromide This article mentions the following:

The acute toxicity change of aqueous solutions of cationic surfactants in the course of ozonization, UV-irradiation and O₃/UV-treatment has been estimated by means of measurement of bioluminescence intensity of bacterial strains Vibrio fischeri B 7070 or Photobacterium phosphoreum B 7071 and variation of chemiluminescence intensity in reaction between luminol and H₂O₂, caused by the Daphnia magna exo metabolites. It was shown that O₃/UV-treatment of cationic surfactant solutions caused minimal toxicity of reaction mixtures In the experiment, the researchers used many compounds, for example, 1-Dodecylpyridin-1-ium bromide (cas: 104-73-4Recommanded Product: 1-Dodecylpyridin-1-ium bromide).

1-Dodecylpyridin-1-ium bromide (cas: 104-73-4) belongs to pyridine derivatives. The pyridine ring occurs in many important compounds, including agrochemicals, pharmaceuticals, and vitamins. Reduced pyridines, namely tetrahydropyridines, dihydropyridines and piperidines, are found in numerous natural and synthetic compounds. The synthesis and reactivity of these compounds have often been driven by the fact many of these compounds have interesting and unique pharmacological properties. Recommanded Product: 1-Dodecylpyridin-1-ium bromide

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Electrochemical reduction of dodecylpyridinium bromide in aprotic solvents: mechanistic studies was written by Hromadova, Magdalena;Pospisil, Lubomir;Sokolova, Romana;Kolivoska, Viliam. And the article was included in Collection of Czechoslovak Chemical Communications in 2011.Category: pyridine-derivatives This article mentions the following:

Reduction mechanism of 1-dodecylpyridin-1-ium bromide (DPBr) in dimethylsulfoxide was studied on Hg electrode. Based on the classical polarog. methods as well as on the use of a.c. techniques it was shown that DPBr is reduced in a reversible one electron transfer step followed by dimerization of the corresponding radical species. Reduction process is accompanied by the adsorption phenomena even in the non-aqueous solvents. Possible modes of DPBr adsorption were studied by the ex situ scanning tunnelling microscopy (STM) imaging of these mols. on highly oriented pyrolytic graphite. In the experiment, the researchers used many compounds, for example, 1-Dodecylpyridin-1-ium bromide (cas: 104-73-4Category: pyridine-derivatives).

1-Dodecylpyridin-1-ium bromide (cas: 104-73-4) belongs to pyridine derivatives. Pyridine’s the lone pair does not contribute to the aromatic system but importantly influences the chemical properties of pyridine, as it easily supports bond formation via an electrophilic attack. Halopyridines are particularly attractive synthetic building blocks in a variety of cross-coupling methods, including the Suzuki-Miyaura cross-coupling reaction.Category: pyridine-derivatives

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem