Tag: 300-400

Coagulation of polystyrene latex in the presence of a cation-active surfactant and polyelectrolytes was written by Poyarkova, T. N.;Nikulin, S. S.;Belozor, D. E.. And the article was included in Russian Journal of Applied Chemistry in 2013.Recommanded Product: 1-Dodecylpyridin-1-ium bromide This article mentions the following:

Coagulating effect of cation-active polyelectrolytes, a copolymer of N,N-dimethyl-N,N-diallylammonium chloride and maleic acid, a fraction of the homopolymer of N,N-dimethyl-N,N-diallylammonium chloride, and low-mol. cation-active surfactant (1-dodecylpyridinium bromide) on a diluted polystyrene latex at pH 7 and 3 was studied. The presence of macromols. with different amounts of cation groups in the copolymer accounts for the appearance of several peaks in the curves describing the dependence of a “minute” optical d. of the latex synthesized in the presence of a purified surfactant, sulfuric acid monododecyl ester sodium salt, on the copolymer additive. 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 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.Recommanded Product: 1-Dodecylpyridin-1-ium bromide

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Micellar Effects of Cationic Detergents in the Decomposition of Ecotoxic Substrates by Hydroxide Ion was written by Simanenko, Yu. S.;Popov, A. F.;Prokop’eva, T. M.;Karpichev, E. A.;Belousova, I. A.;Savelova, V. A.. And the article was included in Theoretical and Experimental Chemistry (Translation of Teoreticheskaya i Eksperimental’naya Khimiya) in 2003.Product Details of 104-73-4 This article mentions the following:

The rate of decomposition of 4-nitrophenyl esters of diethylphosphoric, diethylphosphonic, and 4-toluenesulfonic acids, which are ecotoxicants, by hydroxide ion is enhanced by micelles of cationic detergents. The effect of concentrating the reagents provides for decomposition of the neurotoxins in aqueous micellar media with τ_1/2 ≤ 60 s. In the experiment, the researchers used many compounds, for example, 1-Dodecylpyridin-1-ium bromide (cas: 104-73-4Product Details 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. 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. Product Details of 104-73-4

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Synthesis and study of anisotropic ammonium salts for production of liquid-crystalline materials and devices with variable surface anchoring was written by Kuz’menok, N. M.;Mikhalyonok, S. G.;Arol, A. S.;Bezborodov, V. S.;Krakhalev, M. N.;Sutormin, V. S.;Prishchepa, O. O.;Zyryano, V. Ya.. And the article was included in Zhidkie Kristally i Ikh Prakticheskoe Ispol’zovanie in 2018.HPLC of Formula: 104-73-4 This article mentions the following:

This paper describes the various anisotropic quaternary ammonium salts characterized by a specific interaction with the interface and capable to form various orientational structures of liquid crystal layer, have been prepared It has been shown that these salts are promising materials for creation of advanced liquid crystal compositions with surface anchoring caused by ionic surfactants. The obtained results are of undoubted interest for the developers of new liquid crystal materials and electro-optical devices based on them. In the experiment, the researchers used many compounds, for example, 1-Dodecylpyridin-1-ium bromide (cas: 104-73-4HPLC of Formula: 104-73-4).

1-Dodecylpyridin-1-ium bromide (cas: 104-73-4) belongs to pyridine derivatives. In contrast to benzene, Pyridine’s electron density is not evenly distributed over the ring, reflecting the negative inductive effect of the nitrogen atom. Many analogues of pyridine are known where N is replaced by other heteroatoms . Substitution of one C–H in pyridine with a second N gives rise to the diazine heterocycles (C4H4N2), with the names pyridazine, pyrimidine, and pyrazine.HPLC of Formula: 104-73-4

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Multiple linear regression modeling of the critical micelle concentration of alkyltrimethylammonium and alkylpyridinium salts was written by Jalali-Heravi, M.;Konouz, E.. And the article was included in Journal of Surfactants and Detergents in 2003.Formula: C17H30BrN This article mentions the following:

The critical micelle concentration (CMC) of a set of 30 alkyltrimethylammonium [RN⁺(R’)₃X^–] and alkylpyridinium salts [RN⁺ϕX^–] was related to topol., electronic, and mol. structure parameters using a stepwise regression method. Among different models obtained, two equations were selected as the best and their specifications are given. The statistics for these models together with the cross-validation results indicate the capability of both models to predict the CMC of cationic surfactants. The results obtained for alkyltrimethylammonium salts indicate that geometric characteristics such as volume of the tail of the mol., maximum distance between the atoms, and surface area play a major role in micelle formation. However, the simultaneous modeling of the CMC of both alkyltrimethylammonium and alkylpyridinium salts indicates that the topol. descriptors of the Balaban and Randic indexes and also the electronic parameter of total energy of the mols. are important. In the experiment, the researchers used many compounds, for example, 1-Dodecylpyridin-1-ium bromide (cas: 104-73-4Formula: C17H30BrN).

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 derivatives are also useful as small-molecule α-helix mimetics that inhibit protein-protein interactions, as well as functionally selective GABA ligands.Formula: C17H30BrN

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

3D-QSAR, Synthesis, and antimicrobial activity of 1-Alkylpyridinium Compounds as Potential Agents to Improve Food Safety was written by Rodriguez-Morales, Sergio;Compadre, R. Lilia;Castillo, Rafael;Breen, Philip J.;Compadre, Cesar M.. And the article was included in European Journal of Medicinal Chemistry in 2005.Category: pyridine-derivatives This article mentions the following:

Cetylpyridinium chloride (CPC), an alkylpyridinium compound has been recently approved by the US Food and Drug Administration to reduce bacterial contamination in poultry. Although CPC is very effective and has a very good safety record, its relatively high lipophilicity may limit its use in high fat containing foods such as beef. In this study, the CoMFA anal. (3D-QSAR) of the antimicrobial activity of 60 N-alkylpyridinium compounds against different bacteria was presented. CoMFA contours showed that the activity is highly influenced by the steric factor. Based in these contours, new candidates were designed, which were synthesized and characterized by spectroscopic data. MIC activity over Gram pos. and Gram neg. microorganisms validated the 3D-QSAR study. 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. Pyridines are an important class of heterocycles and occur in polysubstituted forms in many naturally occurring biologically active compounds, drug molecules and chiral ligands. Many analogues of pyridine are known where N is replaced by other heteroatoms . Substitution of one C–H in pyridine with a second N gives rise to the diazine heterocycles (C4H4N2), with the names pyridazine, pyrimidine, and pyrazine.Category: pyridine-derivatives

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Investigation of dynamic surface tension of aqueous solutions of cetyl- and dodecylpyridinium bromide by the oscillating jet method was written by Abdulin, N. G.;Kochurova, N. N.;Povysheva, N. I.;Temkin, A. S.. And the article was included in Vestnik Sankt-Peterburgskogo Universiteta, Seriya 4: Fizika, Khimiya in 2002.Reference of 104-73-4 This article mentions the following:

The dynamic surface tension of aqueous solutions of cetyl- and dodecylpyridinium bromide at different concentrations and temperatures 10-25°C has been measured. In these experiments a temperature inversion of the dynamic surface tension is observed for fresh surfaces. 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. Pyridine derivatives are also useful as small-molecule α-helix mimetics that inhibit protein-protein interactions, as well as functionally selective GABA ligands.Reference of 104-73-4

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Synthesis and characterization of ionic liquid crystals based on substituted pyridinium cations was written by Santos, Andreia F. M.;Cruz, Carlos;Godinho, Maria H.;Dionisio, Madalena;Figueirinhas, Joao L.;Branco, Luis C.. And the article was included in Liquid Crystals.Formula: C17H30BrN This article mentions the following:

Novel ionic liquid crystals based on pyridinium and methylpyridinium cations with a dodecyl chain and bromide as anion was prepared and characterized. [C₁₂Pyr][Br] and [C₁₂-n-Pic][Br] (n = 2, 3 or 4) were studied in order to understand the influence of the Me group position in the mesomorphic behavior. Neat microwave-assisted reactions were carried out to synthesized [C₁₂Pyr][Br], [C₁₂-3-Pic][Br] and [C₁₂-4-Pic][Br] as a sustainable approach, leading to significantly reduced reaction times (35 min vs. 48 h in conventional method). All prepared compounds were characterized by spectroscopic techniques (¹H and ¹³C-NMR; ATR-FTIR), Elemental Anal., Differential Scanning Calorimetry (DSC), Polarised Optical Microscopy (POM) and X-Ray Powder Diffraction (XRD). It was observed that the presence of water highly influences the phase transformations. Nevertheless, thermotropic smectic phases were detected for all materials with a layer spacing between 20 and 35 Å, compatible with a bilayer interdigitated or tilted lamellar arrangement of the cation′s alkyl chain. This work also indicates new routes for preparing ionic liquid crystals with various functionalities ruled by the synthesis design. In the experiment, the researchers used many compounds, for example, 1-Dodecylpyridin-1-ium bromide (cas: 104-73-4Formula: C17H30BrN).

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. Formula: C17H30BrN

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Alkylation of ambident 2-phenyl-1,3-indandione anion in ionic liquid medium and structure of alkylation products was written by Zicmanis, A.;Ozolina, A.;Mekss, P.;Klavins, M.. And the article was included in Latvijas Kimijas Zurnals in 2006.Synthetic Route of C17H30BrN This article mentions the following:

Alkylation of 2-phenyl-1,3-indandione anion by allyl bromide or propargyl chloride was faster in the ionic liquid 1-dodecylpyridinium bromide than in a phase-transfer system. Only C-alkylation products were formed, and the cation used had no appreciable effect. In the experiment, the researchers used many compounds, for example, 1-Dodecylpyridin-1-ium bromide (cas: 104-73-4Synthetic Route of C17H30BrN).

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. Halopyridines are particularly attractive synthetic building blocks in a variety of cross-coupling methods, including the Suzuki-Miyaura cross-coupling reaction.Synthetic Route of C17H30BrN

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Degree of water structuring and its influence on processes of micelle formation and adsorption of surfactants was written by Klimenko, N. A.;Karmazina, T. V.;Kochkodan, O. D.. And the article was included in Ukrainskii Khimicheskii Zhurnal (Russian Edition) in 2001.Synthetic Route of C17H30BrN This article mentions the following:

Method of quasi-elastic slow neutron scattering was used for the determination of the self-diffusion coefficients of water mols. in nonionic and cationic surfactants solutions An alteration of the degree of water structuring in a solution of nonionic surfactant (Triton X-100) takes place at the concentration far lesser than that for an aqueous solution of a cationic surfactant (dodecylpyridinium bromide). This is due to a cooperative influence of a hydrophobic radical and of the length of a hydrophilic chain. A different effect on the degree of water structuring results in a different value of the critical concentration of micellization and in the formation of adsorption structures of different composition for these compounds In the experiment, the researchers used many compounds, for example, 1-Dodecylpyridin-1-ium bromide (cas: 104-73-4Synthetic Route of C17H30BrN).

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. Many analogues of pyridine are known where N is replaced by other heteroatoms . Substitution of one C–H in pyridine with a second N gives rise to the diazine heterocycles (C4H4N2), with the names pyridazine, pyrimidine, and pyrazine.Synthetic Route of C17H30BrN

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Methods for assigning confidence to toxicity data with multiple values – Identifying experimental outliers was written by Steinmetz, Fabian P.;Enoch, Steven J.;Madden, Judith C.;Nelms, Mark D.;Rodriguez-Sanchez, Neus;Rowe, Phil H.;Wen, Yang;Cronin, Mark T. D.. And the article was included in Science of the Total Environment in 2014.Computed Properties of C17H30BrN This article mentions the following:

The assessment of data quality is a crucial element in many disciplines such as predictive toxicol. and risk assessment. Currently, the reliability of toxicity data is assessed on the basis of testing information alone (adherence to Good Laboratory Practice (GLP), detailed testing protocols, etc.). Common practice is to take one toxicity data point per compound – usually the one with the apparently highest reliability. All other toxicity data points (for the same experiment and compound) from other sources are neglected. To show the benefits of incorporating the “less reliable” data, a simple, independent, statistical approach to assess data quality and reliability on a math. basis was developed. A large data set of toxicity values to Aliivibrio fischeri was assessed. The data set contained 1813 data points for 1227 different compounds, including 203 identified as non-polar narcotic. Log K_OW values were calculated and non-polar narcosis quant. structure-activity relationship (QSAR) models were built. A statistical approach to data quality assessment, which is based on data outlier omission and confidence scoring, improved the linear QSARs. The results indicate that a beneficial method for using large data sets containing multiple data values per compound and highly variable study data has been developed. Furthermore this statistical approach can help to develop novel QSARs and support risk assessment by obtaining more reliable values for biol. endpoints. In the experiment, the researchers used many compounds, for example, 1-Dodecylpyridin-1-ium bromide (cas: 104-73-4Computed Properties of C17H30BrN).

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. Halopyridines are particularly attractive synthetic building blocks in a variety of cross-coupling methods, including the Suzuki-Miyaura cross-coupling reaction.Computed Properties of C17H30BrN

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem