Month: November 2022

Helical Nano-crystallite (HNC) Phases: Chirality Synchronization of Achiral Bent-Core Mesogens in a New Type of Dark Conglomerates was written by Alaasar, Mohamed;Prehm, Marko;Tschierske, Carsten. And the article was included in Chemistry – A European Journal in 2016.Synthetic Route of C6H5ClO2 The following contents are mentioned in the article:

Spontaneous generation of macroscopic homochirality in soft matter systems by self-assembly of exclusively achiral mols. under achiral conditions is a challenging task with relevance for fundamental scientific research and technol. applications. Dark conglomerate phases (DC phases), being optically isotropic mesophases composed of conglomerates of macroscopic chiral domains and formed by some non-chiral bent-core mesogens, represent such a case. Here we report two new series of non-sym. bent-core mols. capable of forming a new type of mirror symmetry broken DC phases. In the synthesized mols., a bent 4-bromoresorcinol core is connected to a Ph benzoate wing and an azobenzene wing with or without addnl. peripheral fluorine substitution. The self-assembly was investigated by DSC, polarizing microscopy, electro-optical studies and XRD. Chiral and apparently achiral DC phases were observed besides distinct types of lamellar liquid crystalline phases with different degree of polar order, allowing the investigation of the transition from smectic to DC phases. This indicates a process in which increased packing d. at first gives rise to restricted rotation and thus to growing polar order, which then leads to chirality synchronization, layer frustration and nano-scale crystallization Topol. constraints arising from the twisted packing of helical conformers in lamellar crystals is proposed to lead to amorphous solids composed of helical nano-crystallites with short coherence length (HNC phases). This is considered as a third major type of DC phases, distinct from the previously known liquid crystalline sponge phases and the helical nano-filament phases (HNF phases). Guidelines for the mol. design of new materials capable of self-assembly into these three types of DC phases are proposed. This study involved multiple reactions and reactants, such as 4-Chlororesorcinol (cas: 95-88-5Synthetic Route of C6H5ClO2).

4-Chlororesorcinol (cas: 95-88-5) 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. Aliphatic organochlorides are often alkylating agents as chlorine can act as a leaving group, which can result in cellular damage.Synthetic Route of C6H5ClO2

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

Intermicellar Interactions and the Viscoelasticity of Surfactant Solutions: Complementary Use of SANS and SAXS was written by Lutz-Bueno, Viviane;Liebi, Marianne;Kohlbrecher, Joachim;Fischer, Peter. And the article was included in Langmuir in 2017.Category: chlorides-buliding-blocks The following contents are mentioned in the article:

In ionic surfactant micelles, basic interactions among distinct parts of surfactant monomers, their counterion, and additives are fundamental to tuning mol. self-assembly and enhancing viscoelasticity. The authors investigate the addition of sodium salicylate (NaSal) to hexadecyltrimethylammonium chloride and bromide (CTAC and CTAB) and 1-hexadecylpyridinium chloride and bromide (CPyCl and CPyBr), which have distinct counterions and headgroup structures but the same hydrophobic tail. Different contrasts are obtained from small-angle neutron scattering (SANS), which probes differences between the nucleus of atoms, and X-rays SAXS, which probes differences in electron d. If combined, this contrast allows us to define specific intramicellar length scales and intermicellar interactions. SANS signals are sensitive to the contrast between the solvent (D₂O) and the hydrocarbonic tails in the micellar core (hydrogen), and SAXS can access the inner structure of the polar shell because the headgroups, counterions, and penetrated salt have higher electron densities compared to the solvent and to the micellar core. The number d., intermicellar distances, aggregation number, and inter/intramicellar repulsions are discussed on the basis of the dependence of the structure factor and form factor on the micellar aggregate morphol. Therefore, we confirm that micellar growth can be tuned by variations in the flexibility and size of the headgroup as well as the ionic dissociation rate of its counterion. Addnl., we show that the counterion binding is even more significant to the development of viscoelasticity than the headgroup structure of a surfactant mol. This is a surprising finding, showing the importance of electrostatic charges in the self-assembly process of ionic surfactant mols. This study involved multiple reactions and reactants, such as N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9Category: chlorides-buliding-blocks).

N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9) 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.Category: chlorides-buliding-blocks

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

Guest Transition Metals in Host Inorganic Nanocapsules: Single Sites, Discrete Electron Transfer, and Atomic Scale Structure was written by Haviv, Eynat;Chen, Bo;Carmieli, Raanan;Houben, Lothar;Cohen, Hagai;Leitus, Gregory;Avram, Liat;Neumann, Ronny. And the article was included in Journal of the American Chemical Society in 2020.Synthetic Route of C25H54ClN The following contents are mentioned in the article:

Host-guest solution chem. with a wide range of organic hosts is an important and established research area, while the use of inorganic hosts is a more nascent area of research. In the recent past in a few cases, Keplerate-type molybdenum oxide-based porous, spherical clusters, shorthand notation {Mo₁₃₂}, have been used as hosts for organic guests. Here, authors demonstrate the synthetically controlled encapsulation of first-row transition metals (M = Mn, Fe, and Co) within a Keplerate cluster that was lined on the inner core with phosphate anions, {Mo₁₃₂PO₄}. The resulting M²⁺_x⊂{Mo₁₃₂PO₄} host-guest complexes were characterized by ³¹P NMR and ENDOR spectroscopy that substantiated the encapsulation of the first-row transition metal guest. Magnetic susceptibility measurements showed that the encapsulation of up to 10 equiv showed little magnetic interaction between the encapsulated metals, which indicated that each guest atom occupied a single site. Visualization of the capsules and differentiation of the Mo atoms of the capsule framework and the encapsulated transition metal were possible using spherical and chromatic double aberration-corrected electron microscopy combined with energy-filtered TEM (EFTEM) elemental maps. In addition, use of visible light-induced XPS for chem. resolved elec. measurements (CREM) confirmed the successful encapsulation of M within {Mo₁₃₂PO₄} and furthermore showed photoinduced electron transfer from M to Mo. In the future, such targeted electron transfer between host {Mo₁₃₂} and a transition metal guest could be used as photoinitiated switches using inorganic compounds and for single site photocatalytic reactions in confined space. 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. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. However, the extent of chlorination is difficult to control.Synthetic Route of C25H54ClN

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

Synthesis and Antiproliferative Activity of a New Series of Mono- and Bis(dimethylpyrazolyl)-s-triazine Derivatives Targeting EGFR/PI3K/AKT/mTOR Signaling Cascades was written by Shawish, Ihab;Barakat, Assem;Aldalbahi, Ali;Malebari, Azizah M.;Nafie, Mohamed S.;Bekhit, Adnan A.;Albohy, Amgad;Khan, Alamgir;Ul-Haq, Zaheer;Haukka, Matti;de la Torre, Beatriz G.;Albericio, Fernando;El-Faham, Ayman. And the article was included in ACS Omega in 2022.Computed Properties of C9H6Cl2N4 The following contents are mentioned in the article:

Here, we synthesized a newseries of mono- and bis(dimethylpyrazolyl)-s-triazine derivatives The synthetic methodol. involved the reaction of different mono- and dihydrazinyl-s-triazine derivatives with acetylacetone in the presence of triethylamine to produce the corresponding target products in high yield and purity. The antiproliferative activity of the novel mono- and bis(dimethylpyrazolyl)-s-triazine derivatives was studied against three cancer cell lines, namely, MCF-7, HCT-116, and HepG2. N-(4-Bromophenyl)-4-(3,5-dimethyl-1H-pyrazol-1-yl)-6-morpholino-1,3,5-triazin-2-amine 4f, N-(4-chlorophenyl)-4,6-bis(3,5-dimethyl-1H-pyrazol-1-yl)-1,3,5-triazin-2-amine 5c, and 4,6-bis(3,5-dimethyl-1H-pyrazol-1-yl)-N-(4-methoxyphenyl)-1,3,5-triazin-2-amine 5d showed promising activity against these cancer cells: 4f [(IC₅₀ = 4.53 ± 0.30μM (MCF-7); 0.50 ± 0.080μM (HCT-116); and 3.01 ± 0.49μM (HepG2)]; 5d [(IC₅₀ = 3.66 ± 0.96μM (HCT-116); and 5.42 ± 0.82μM (HepG2)]; and 5c [(IC₅₀ = 2.29 ± 0.92μM (MCF-7)]. Mol. docking studies revealed good binding affinity with the receptor targeting EGFR/PI3K/AKT/mTOR signaling cascades. Compound 4f exhibited potent EGFR inhibitory activity with an IC₅₀ value of 61 nM compared to that of Tamoxifen (IC₅₀ value of 69 nM), with EGFR inhibition of 83 and 84%, resp., at a concentration of 10μM. Interestingly, 4f showed remarkable PI3K/AKT/mTOR inhibitory activity with 0.18-, 0.27-, and 0.39-fold decrease in their concentration (reduction in controls from 6.64, 45.39, and 86.39 ng/mL to 1.24, 12.35, and 34.36 ng/mL, resp.). Hence, the synthetic 1,3,5-triazine derivative 4f exhibited promising antiproliferative activity in HCT-116 cells through apoptosis induction by targeting the EGFR and its downstream pathway. This study involved multiple reactions and reactants, such as 4,6-Dichloro-N-phenyl-1,3,5-triazin-2-amine (cas: 2272-40-4Computed Properties 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. 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).Computed Properties of C9H6Cl2N4

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

High-Frequency Application of Cationic Agents Containing Lubricant Eye Drops Causes Cumulative Corneal Toxicity in an Ex Vivo Eye Irritation Test Model was written by Dutescu, Ralf M.;Uthoff, Daniel;Panfil, Claudia;Schrage, Norbert. And the article was included in Journal of Ocular Pharmacology and Therapeutics in 2020.Reference of 122-18-9 The following contents are mentioned in the article:

Purpose: High-frequency applied cetalkonium chloride (CAC) and benzalkonium chloride (BAC) 0.02% did not hamper corneal healing in a living rabbit model of induced corneal erosion. In contrast, the ex vivo eye irritation test (EVEIT) shows inhibition of healing for these substances. In a systematic ex vivo reproduction of the in vivo experiments, we discuss the background of these differences. Methods: Excised rabbit corneas (n = 5 per group) were cultured in artificial anterior chambers (EVEIT). Four erosions were induced for each cornea before starting regular 21 installations/day over 3 days of (1) CAC containing eye drops (Cationorm⁾, (2) 0.02% BAC. Corneal fluorescein staining, quantification of glucose-/lactate consumption, and histol. were performed. Results: BAC 0.02% treated corneas showed increased epithelial lesions from 10.13 ± 0.65 mm² to 10 ± 0.8 mm² on day 0, to 86.82 ± 5.18 mm² (P < 0.0001) by day 3. After a trend toward smaller lesions for CAC on day 1, erosion sizes increased significantly by day 3 from 9.82 ± 0.30 mm² to 29.51 ± 16.87 mm² (P < 0.05). For 1 cornea, corneal erosions nearly disappeared on day 3 (0.89 mm²). Corneal lactate increased significantly for BAC and CAC, whereas glucose concentrations were unchanged. Histol. revealed disintegration of the corneal structures for both compounds Conclusions: The data underline the EVEIT as a predictive toxicity test to show side effects in a time-compressed manner. The consistency of these predictions was previously demonstrated by the EVEIT for BAC, phosphate buffer, and others. The EVEIT is suited for a chronic application prediction of tolerability and toxic side effects of eye drops in particular, and other chems. in general. This study involved multiple reactions and reactants, such as N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9Reference of 122-18-9).

N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9) 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. Aliphatic organochlorides are often alkylating agents as chlorine can act as a leaving group, which can result in cellular damage.Reference of 122-18-9

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

Effect of ionic composition on physicochemical properties of mono-ether functional ionic liquids was written by Zhou, Hancheng;Chen, Lifei;Wei, Zhuo;Lu, Yongjuan;Peng, Cheng;Zhang, Bin;Zhao, Xiaojuan;Wu, Lan;Wang, Yanbin. And the article was included in Molecules in 2019.Application of 6294-17-3 The following contents are mentioned in the article:

Tunable properties prompt the development of different “tailor-made” functional ionic liquids (FILs) for specific tasks. FILs with an ether group are good solvents for many organic compounds and enzymic reactions. However, ionic composition influences the solubility by affecting the physiochem. properties of these FILs. To address the structure effect, a series of novel FILs with a mono-ether group (ME) based on imidazole were prepared through cationic functionalization and anionic exchange reactions, and characterized by NMR, mass spectroscopy, and Thermogravimetric anal. (TGA). The effect of ionic composition (cationic structure and anions) on d., viscosity, ionic conductivity, electrochem. window, and thermal properties of these ME-FILs were systematically investigated. In general, the viscosity and heat capacity increases with the bigger cationic volume of ME-FILs; in particular, the 2-alkyl substitution of imidazolium enhances the viscosity remarkably, whereas the d. and conductivity decrease on the condition of the same [NTf₂]- anion; For these ME-FILs with the same cations, the d. follows the order of [NTf₂]- > [PF₆]- > [BF₄]-. The viscosity follows the order of [PF₆]- > [BF₄]- > [NTf₂]-. Ion conductivity follows the order of [NTf₂]- ~[BF₄]- > [PF₆]-. It is noted that the dynamic d. has a good linear relationship with the temperature, and the slopes are the same for all ME-FILs. Furthermore, these ME-FILs have broad electrochem. windows and glass transition temperatures in addition to a cold crystallization and a melt temperature for ME-FIL7. Therefore, the cationic structure and counter anion affect the physicochem. properties of these ME-FILs together. This study involved multiple reactions and reactants, such as 1-Bromo-6-chlorohexane (cas: 6294-17-3Application of 6294-17-3).

1-Bromo-6-chlorohexane (cas: 6294-17-3) 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.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 of 6294-17-3

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

Preparation and performance evaluation of supramolecular phase change fracturing fluid with thermal stimuli-response was written by Yu, Donghe;Chen, Weiyu;Liu, Guohua;Zhao, Liqiang;Jia, Yuanzhao;Xu, Kun;Zhang, Nanlin. And the article was included in Youtian Huaxue in 2021.Recommanded Product: Tetramethylammonium chloride The following contents are mentioned in the article:

In the hydraulic fracturing stimulation measures, the injection of proppant often leads to the problems such as sand out, sand plug or no injection, which affects the fracturing effect. Using the self-assembly characteristic of supramol. material, supramol. building unit was synthesized by using N,N-dimethylformamide (DMF) as solvent, adding isocyanurate and tetramethylammonium chloride, and then the phase change fracturing fluid (PCFF) was prepared by modifying the building unit through functional unit, sodium dodecyl benzene sulfonate, polyvinyl pyrrolidone, hydrogen peroxide, calcium chloride, etc. The PCFF and the non-phase change fracturing fluid were mixed and heated to 80°C to prepare a phase change solid. The synthesized products were characterized by NMR and SEM, the microstructure of the system was analyzed, and the injectability of phase change fracturing fluid and the pressure resistance and flow conductivity of phase change solid were studied. The results showed that during the heating process, the mol. self-assembly arrangement of PCFF underwent a phase change and formed a solid. The PCFF had good injectability, and the average viscosity at 20-70°C was only 17.55 mPa·s. The phase change solid had good pressure resistance and crush resistance, and the crushing rate under 28 and 52 MPa closing pressure was 1.83% and 3.22%, resp. The conductivity of phase change solid under different sanding concentrations was better, and the high-pressure conductivity was close to that of ceramsite and much higher than that of quartz sand. During the fracturing construction process, only liquid was injected. The PCFF formed a solid phase at the formation temperature to support the fractures and established oil and gas channels, avoiding sand plugging and injectability problem of solid proppant. This study involved multiple reactions and reactants, such as Tetramethylammonium chloride (cas: 75-57-0Recommanded Product: Tetramethylammonium chloride).

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

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

Association, distribution, liberation, and rheological balances of alkyldimethylbenzylammonium chlorides (C12-C16) was written by Vitkova, Zuzana;Oremusova, Jarmila;Herdova, Petra;Ivankova, Ol’ga;Vitko, Anton. And the article was included in Molecules in 2017.COA of Formula: C25H46ClN The following contents are mentioned in the article:

It is known that cationic surfactants have an antimicrobial effect and act as enhancers. This paper studies three cationic surfactants from the group of alkyldimethylbenzylammonium chlorides (dodecyl-, tetradecyl-, and hexadecyl). Interest is focused on the association of the surfactants with respect to temperature, partition balances and their influence on drug release, rheol. properties, and the pH of hydrogels. The critical micelle concentrations (CMC) of the surfactants were estimated from dependencies of conductivity, d., spectrofluorimetry, and UV-VIS spectrophotometry on molarity in the temperature range of 25-50°C. It was found that the temperature dependence of a CMC is U-shaped, with its min. at 30°C, and the CMC value decreases as the length of the chain increases. The pseudo-phase separation model was used for the calculation of various thermodn. parameters, such as the Gibbs free energies (spontaneous process), enthalpies (exothermic process), and entropies of the micelles’ formation, CMCs, and the degree of counterion binding. All thermodn. parameters, as functions of the temperature, were estimated It was found that partition coefficients increase as the length of the alkyl chain and the pH = (5.0-7.0) increase. The influences of surfactants, below and above the CMC, on drug (chlorhexidine dihydrochloride) release from hydrogels, rheol. properties, and pH at 30°C were studied. Also, the amounts of the released drug increase as the alkyl chains of the surfactants prolongate. The amounts of the released drug with the surfactant below the CMC are greater than that above the CMC. All hydrogels (regardless of the length of the alkyl chain) exhibit a non-Newtonian pseudo-plastic flow. The results obtained will be used in the formulation of the drug and surfactants into dosage forms. This study involved multiple reactions and reactants, such as N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9COA of Formula: C25H46ClN).

N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9) 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. 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.COA of Formula: C25H46ClN

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

Layer-by-layer (LbL) assembly of polyelectrolytes at the surface of a fiberglass membrane used as a support of the polarized liquid-liquid interface was written by Borgul, Paulina;Rudnicki, Konrad;Chu, Liangyong;Leniart, Andrzej;Skrzypek, Slawomira;Sudholter, Ernst J. R.;Poltorak, Lukasz. And the article was included in Electrochimica Acta in 2020.Related Products of 75-57-0 The following contents are mentioned in the article:

The electrified liquid-liquid interface (LLI) was supported with the bare and polyelectrolyte modified fiberglass membranes. The permeability of these supports was then studied with ion transfer voltammetry (ITV). This work descends from three mutually interconnected exptl. tasks. (i) The study of an interfacial behavior of three polyelectrolytes, poly(ethyleneimine) (PEI), polystyrene sulfonate (PSS), and polyhexamethylene guanidine (PHMG) at the polarized LLI. (ii) Electrochem. characterization of the LLI supported by the unmodified fiberglass membrane. (iii) Polyelectrolyte multilayer placement, using layer-by-layer processing, at the surface of the fiberglass membrane and its further use as the support for the electrified LLI. Bare and modified membranes were characterized using ITV in the presence of a family of quaternary ammonium cations: Me₄N⁺ (TMA⁺), Et₄N⁺ (TEA⁺), Pr₄N⁺ (TPrA⁺) and Bu₄N (TBA⁺) initially dissolved in the aqueous phase as the chloride salts. The ionic currents related to their transmembrane transfer were affected already after the 1st polyelectrolyte layer placement. In addition to electrochem., the modification process was followed using several complementary techniques, including optical microscopy (OM), at. force microscopy (AFM), IR spectroscopy, and SEM. The proposed methodol. offers very simple, fast, and versatile (having in mind the available selection of functional polyelectrolytes) protocol for a membrane preparation having size sieving properties. In turn, the electrochem. at the LLI can be used as an insightful tool to study the ionic transmembrane currents. This study involved multiple reactions and reactants, such as Tetramethylammonium chloride (cas: 75-57-0Related Products of 75-57-0).

Tetramethylammonium chloride (cas: 75-57-0) 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 75-57-0

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

Influence of in Vitro Assay Setup on the Apparent Cytotoxic Potency of Benzalkonium Chlorides was written by Groothuis, Floris A.;Timmer, Niels;Opsahl, Eystein;Nicol, Beate;Droge, Steven T. J.;Blaauboer, Bas J.;Kramer, Nynke I.. And the article was included in Chemical Research in Toxicology in 2019.Quality Control of N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride The following contents are mentioned in the article:

The nominal concentration is generally used to express concentration-effect relationships in in vitro toxicity assays. However, the nominal concentration does not necessarily represent the exposure concentration responsible for the observed effect. Surfactants accumulate at interphases and likely sorb to in vitro system components such as serum protein and well plate plastic. The extent of sorption and the consequences of this sorption on in vitro readouts is largely unknown for these chems. The aim of this study was to demonstrate the effect of sorption to in vitro components on the observed cytotoxic potency of benzalkonium chlorides (BAC) varying in alkyl chain length (6-18 carbon atoms, C6-18) in a basal cytotoxicity assay with the rainbow trout gill cell line (RTgill-W1). Cells were exposed for 48h in 96-well plates to increasing concentration of BACs in exposure medium containing 0, 60 μM Bovine Serum Albumin (BSA) or 10% fetal bovine serum (FBS). Before and after exposure, BAC concentrations in exposure medium were anal. determined Based on freely dissolved concentrations at the end of the exposure, median effect concentrations (EC₅₀) decreased with increasing alkyl chain length up to 14 carbons. For BAC with alkyl chains of twelve or more carbons, EC₅₀s based on measured concentrations after exposure in supplement-free medium were up to 25-times lower than EC₅₀ calculated using nominal concentrations When BSA or FBS was added to the medium, a decrease in cytotoxic potency of up to 22 times was observed for BAC with alkyl chains of eight or more carbons. The results of this study emphasize the importance of expressing the in vitro readouts as a function of a dose metric that is least influenced by assay setup to compare assay sensitivities and chem. potencies. This study involved multiple reactions and reactants, such as N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9Quality Control of N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride).

N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9) 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.Quality Control of N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride

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