Tag: 400-500

Deep eutectic solvent extraction of cortisol and cortisone from human saliva followed by LC-UV analysis was written by Nishijo, Nao;Hayama, Tadashi;Tomita, Ryoko;Fujioka, Toshihiro. And the article was included in Journal of Chromatography B in 2021.Quality Control of N-Methyl-N,N-dioctyloctan-1-aminium chloride The following contents are mentioned in the article:

A novel extraction method was developed for the determination of cortisol and cortisone. In this study, we prepared a hydrophobic deep eutectic solvent (DES) by mixing trioctylmethylammonium chloride and pentafluorophenol as a hydrogen bond acceptor and a hydrogen bond donor, resp., for use as the extraction solvent. The extraction of cortisol and cortisone was performed by adding a small volume of the DES to the aqueous sample. After centrifugation, the resulting sedimented DES phase was injected into a reversed-phase liquid chroamtog. column, and the analytes were detected with an UV detector at 254 nm. Under the optimized extraction conditions, the enrichment factors of cortisol and cortisone were 9.3 and 8.5, resp. Furthermore, the linear dynamic ranges were established over a concentration range of 10-200 pmol mL-1 (r2 > 0.9992), and the limits of detection of cortisol and cortisone were found to be 2.1 and 1.8 pmol mL-1, resp. The applicability of this method was evaluated by analyzing the cortisol and cortisone contents of human saliva samples. This study involved multiple reactions and reactants, such as N-Methyl-N,N-dioctyloctan-1-aminium chloride (cas: 5137-55-3Quality Control of N-Methyl-N,N-dioctyloctan-1-aminium chloride).

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

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

Inverted Circularly Polarized Luminescence Behavior Induced by Helical Nanofibers through Chiral Co-Assembly from Achiral Liquid Crystal Polymers and Chiral Inducers was written by Zhang, Yuxia;Li, Hang;Geng, Zhongxing;Zheng, Wen-Hua;Quan, Yiwu;Cheng, Yixiang. And the article was included in ACS Nano in 2022.HPLC of Formula: 5137-55-3 The following contents are mentioned in the article:

Chiral supramol. assembly can provide a powerful strategy for developing circularly polarized luminescence (CPL)-active materials by forming helixes or superhelices into single or multiple components. Herein, we chose three achiral liquid crystal polymers (LC-P1/P2/P3) and chiral binaphthyl-based inducers (R/S-M) with anchored dihedral angles to construct chiral co-assemblies and explore the induced CPL behavior from pyrenyl (Py) emitters in achiral LC polymers through the regulation of helical nanofibers during the supramol. co-assembly process. Most interestingly, chiral co-assembly (R/S-M)_0.1-(P3)_0.9 emitted an inverted blue-colored CPL signal during thermal annealing treatment at the glass transition temperature due to the flexible main chain of the LC polymer (LC-P3). The strongest blue-colored CPL emission for the (R/S-M)_0.1-(P3)_0.9 spin-coated film (λ_em = 455 nm, |g_em| = 6.47 × 10^-2, F_F = 48.5%) could be detected by using thermal annealing treatment at 105°C. This study involved multiple reactions and reactants, such as N-Methyl-N,N-dioctyloctan-1-aminium chloride (cas: 5137-55-3HPLC of Formula: 5137-55-3).

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

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

A bifunctional zeolitic porous liquid with incompatible Lewis pairs for antagonistic cascade catalysis was written by Chen, Hao;Yang, Zhenzhen;Peng, Honggen;Jie, Kecheng;Li, Peipei;Ding, Shunmin;Guo, Wei;Suo, Xian;Liu, Jixing;Yan, Ran;Liu, Wenming;Do-Thanh, Chi-Linh;Wang, Hongming;Wang, Zhendong;Han, Lu;Yang, Weimin;Dai, Sheng. And the article was included in Chem in 2021.Application In Synthesis of N-Methyl-N,N-dioctyloctan-1-aminium chloride The following contents are mentioned in the article:

The emergence of porous liquids (PLs) opened opportunities to form unique antagonistic systems capable of fulfilling cascade reactions promoted by incompatible active sites in one pot, which is a long-term challenging subject in catalysis. Herein, unique bifunctional type III PL-based systems were facilely fabricated via assembly of zeolite nanosheets with ionic liquids Rational structural design afforded PLs that feature high zeolite concentration, stable dispersion after 2 years, abundant cavity distribution, and involvement of antagonistic groups (acid and base sites) in separated and active form via steric hindrance control and electronic repulsion regulation. These unique properties worked cooperatively to fulfill the cascade deacetalization-Knoevenagel/Aldol condensation in one pot with superior catalytic efficiency outperforming the traditional systems. The key to success lies in the formation of bifunctional composites, transformation of zeolite from heterogeneous to homogeneous via surface modification, and rapid mass transfer ensured by the rigid porous architecture. This study involved multiple reactions and reactants, such as N-Methyl-N,N-dioctyloctan-1-aminium chloride (cas: 5137-55-3Application In Synthesis of N-Methyl-N,N-dioctyloctan-1-aminium chloride).

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

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

A mechanochromic donor-acceptor torsional spring was written by Raisch, Maximilian;Maftuhin, Wafa;Walter, Michael;Sommer, Michael. And the article was included in Nature Communications in 2021.Safety of N-Methyl-N,N-dioctyloctan-1-aminium chloride The following contents are mentioned in the article:

Mechanochromic polymers are intriguing materials that allow to sense force of specimens under load. Most mechanochromic systems rely on covalent bond scission and hence are two-state systems with optically distinct ”on” and ”off” states where correlating force with wavelength is usually not possible. Translating force of different magnitude with gradually different wavelength of absorption or emission would open up new possibilities to map and understand force distributions in polymeric materials. Here, we present a mechanochromic donor-acceptor (DA) torsional spring that undergoes force-induced planarization during uniaxial elongation leading to red-shifted absorption and emission spectra. The DA spring is based on ortho-substituted diketopyrrolopyrrole (o-DPP). Covalent incorporation of o-DPP into a rigid yet ductile polyphenylene matrix allows to transduce sufficiently large stress to the DA spring. The mech. induced deflection from equilibrium geometry of the DA spring is theor. predicted, in agreement with experiments, and is fully reversible upon stress release. This study involved multiple reactions and reactants, such as N-Methyl-N,N-dioctyloctan-1-aminium chloride (cas: 5137-55-3Safety of N-Methyl-N,N-dioctyloctan-1-aminium chloride).

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

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

Taste sensor based on the floating gate structure of a lateral double-diffused metal-oxide semiconductor was written by Jeong, Hyun-Min;Kwon, Hyurk-Choon;Xu, Binrui;Jung, Daewoong;Han, Maeum;Kwon, Dae-Hyuk;Kang, Shin-Won. And the article was included in Sensors and Actuators, B: Chemical in 2020.Category: chlorides-buliding-blocks The following contents are mentioned in the article:

This study reports the evaluation of taste sensor applications using a lateral double-diffused metal-oxide semiconductor (LDMOS) with floating gate structures. This is the first study to use a LDMOS device, coated with a lipid membrane, to detect multiple tastes. The proposed device is manufactured based on a standard complementary metal-oxide semiconductor (CMOS) logic process and has a floating-gate structure for targeting sensor applications. Lipid membranes of Methyltrioctylammonium chloride (TOMA), Oleylamine (OAm), Decyl alc. (DA), Oleic acid (OA), and Dioctyl phosphate (DOP), with different reactivities, were used to observe the drain current changes at various concentrations (1 fM-1 mM) of the five taste substances: sourness, bitterness, sweetness, saltiness, and umami. The exptl. results show that the sensor can operate over a wide and dynamic range (1 fM-1 mM), exhibits a very low-detection limit of 1 fM, and can classify five substances with different tastes. Thus, this study demonstrates that the proposed device is suitable for application as a taste sensor. This study involved multiple reactions and reactants, such as N-Methyl-N,N-dioctyloctan-1-aminium chloride (cas: 5137-55-3Category: chlorides-buliding-blocks).

N-Methyl-N,N-dioctyloctan-1-aminium chloride (cas: 5137-55-3) 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.Category: chlorides-buliding-blocks

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

A highly efficient purely organic room-temperature phosphorescence film based on a selenium-containing emitter for sensitive oxygen detection was written by Wang, Shuai;Shu, Haiyang;Han, Xianchao;Wu, Xiaofu;Tong, Hui;Wang, Lixiang. And the article was included in Journal of Materials Chemistry in 2021.Application In Synthesis of N-Methyl-N,N-dioctyloctan-1-aminium chloride The following contents are mentioned in the article:

Developing purely organic room-temperature phosphorescence (RTP) materials with high phosphorescence efficiency in film states is important for their applications but remains a great challenge. Herein, a donor-acceptor type RTP mol. (SeX-CzPh) with 9H-selenoxanthen-9-one and 9-phenyl-9H-carbazole as the acceptor and donor units, resp., is designed and synthesized. SeX-CzPh shows a high phosphorescence quantum yield of 44.3% in a doped polystyrene film at room temperature, which is 4-fold higher than that of its analog TX-CzPh with 9H-thioxanthene-9-one as the acceptor unit. The heavy selenium atom plays a key role in achieving high phosphorescence quantum yields, owing to the effective ISC process through strong spin-orbit coupling. Moreover, the SeX-CzPh-based oxygen film sensor exhibits a wide detection range (0-2.1 x 10⁵ ppm), a high K_SV (1.27 x 10^-4 ppm^-1) and a low detection limit (4.9 ppm). This work demonstrates that 9H-selenoxanthen-9-one is a promising building block for the rational design of highly efficient purely organic RTP materials. This study involved multiple reactions and reactants, such as N-Methyl-N,N-dioctyloctan-1-aminium chloride (cas: 5137-55-3Application In Synthesis of N-Methyl-N,N-dioctyloctan-1-aminium chloride).

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. 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.Application In Synthesis of N-Methyl-N,N-dioctyloctan-1-aminium chloride

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

Reversible Complexation Mediated Living Radical Polymerization Using Tetraalkylammonium Chloride Catalysts was written by Han, Shuaiyuan;Zheng, Yichao;Sarkar, Jit;Niino, Hiroshi;Chatani, Shunsuke;Goto, Atsushi. And the article was included in Macromolecular Rapid Communications.Formula: C25H54ClN The following contents are mentioned in the article:

The paper reports the first use of organic chloride salts as catalysts for reversible complexation mediated living radical polymerization Owing to the strong halogen-bond forming ability of Cl^–, the studied four tetraalkylammonium chloride catalysts (R₄N⁺Cl^–) successfully control the polymerizations of Me methacrylate, yielding polymers with low dispersities up to high monomer conversion (>90%). Benzyldodecyldimethylammonium chloride is further exploited to other methacrylates and yields low-dispersity block copolymers. Advantages of the chloride salt catalysts are wide monomer scope, good livingness, accessibility to block copolymers, and good solubility in organic media. Because of the good solubility, the use of the chloride salt catalysts can prevent agglomeration of catalysts on reactor walls in organic media, which is an industrially attractive feature. Among halide anions, chloride anion is the most abundant and least expensive halide anion, and therefore, the use of the chloride salt catalysts may lower the cost of the polymerization This study involved multiple reactions and reactants, such as N-Methyl-N,N-dioctyloctan-1-aminium chloride (cas: 5137-55-3Formula: C25H54ClN).

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).Formula: C25H54ClN

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

Entrapment of peroxophosphotungstate in SBA-15 by silylation and its catalytic efficiency in the epoxidation of soybean oil was written by Wai, Phyu Thin;Jiang, Pingping;Shen, Yirui;Zhang, Pingbo;Gu, Qian. And the article was included in Applied Catalysis, A: General in 2020.Formula: C25H54ClN The following contents are mentioned in the article:

The efficient catalysts were designed to allow the entry and release of reactants and products into the mesoporous SBA-15 in which the active sites, peroxophosphotungstate, were entrapped by silylation with three different silylating agents (C₃, C₅, and C₈ arm). The as-prepared catalysts were characterized by elemental anal., ICP anal., TGA, XRD, N₂ adsorption/desorption, SEM, TEM, and FT-IR spectra. Their catalytic performances were tested for the epoxidation of soybean oil using different parameters such as temperature, H₂O₂ to unsaturation molar ratio, catalyst loading and stirring speed. The resulting epoxidized soybean oil was analyzed qual. and quant. by FT-IR and ¹HNMR. The results confirmed that the catalyst silylated with C₈ arm is promising for the synthesis of epoxides of long-chain carbon and reusable at least three times without obvious decrease in activity. Moreover, use of H₂O₂ oxidant and free of solvent in the epoxidation reaction are the main advantages of these catalysts. This study involved multiple reactions and reactants, such as N-Methyl-N,N-dioctyloctan-1-aminium chloride (cas: 5137-55-3Formula: C25H54ClN).

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

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

Tungsten Peroxopolyoxo Complexes as Advanced Catalysts for the Oxidation of Organic Compounds with Hydrogen Peroxide was written by Pai, Zinaida P.;Chesalov, Yuriy A.;Berdnikova, Polina V.;Uslamin, Evgeny A.;Yushchenko, Dmitry Yu.;Uchenova, Yulia V.;Khlebnikova, Tatiana B.;Baltakhinov, Vladimir P.;Kochubey, Dmitry I.;Bukhtiyarov, Valerii I.. And the article was included in Applied Catalysis, A: General in 2020.Product Details of 5137-55-3 The following contents are mentioned in the article:

Selective oxidation of organic substrates by environment-friendly oxidizing agents is an important ingredient of the sustainable chem. industry. Here we report a comprehensive study in the field of metal peoroxocomplex catalysis for the selective liquid phase oxidation of various organic substrates. A number of well-defined bi-functional tungsten complex catalysts with tetra nuclear structure {PO4[WO(O₂)₂]₄}^3- in combination with a phase-transfer agents were synthesized. The structural properties were thoroughly studied using of IR, Raman and EXAFS spectroscopy. By combining different spectroscopy techniques were able to elucidate the effect of quaternary ammonium cations on the structural properties of the resulting peroxo complexes. The catalytic properties of these well-defined material were then evaluated in bi-phasic selective oxidation of cyclooctene, Me oleate and N-phosphonomethyliminodiacetic acid with hydrogen peroxide under mild conditions. For every substrate we were able to achieve high conversion at the selectivity towards a target product close to 100%. This study involved multiple reactions and reactants, such as N-Methyl-N,N-dioctyloctan-1-aminium chloride (cas: 5137-55-3Product Details of 5137-55-3).

N-Methyl-N,N-dioctyloctan-1-aminium chloride (cas: 5137-55-3) 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. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. However, the extent of chlorination is difficult to control.Product Details of 5137-55-3

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

Novel hydrophobic deep eutectic solvents for ultrasound-assisted dispersive liquid-liquid microextraction of trace non-steroidal anti-inflammatory drugs in water and milk samples was written by Qiao, Lizhen;Sun, Ruiting;Yu, Chunmei;Tao, Yuan;Yan, Yang. And the article was included in Microchemical Journal in 2021.Safety of N-Methyl-N,N-dioctyloctan-1-aminium chloride The following contents are mentioned in the article:

In the present study, several novel and natural hydrophobic deep eutectic solvents (HDESs) were prepared, and one of the HDESs composed of guanidinium chloride and thymol was advantageously used to develop an ultrasound-assisted dispersive liquid-liquid microextraction (UA-DLLME) method combined with high-performance liquid chromatog. for the determination of four non-steroidal anti-inflammatory drugs (NSAIDs). Several important parameters influencing extraction efficiency were investigated and optimized, including the type and volume of HDES, ultrasound time, solution pH and the amount of salt addition Under optimal exptl. conditions, the method showed good linearity with the determination coefficients (R²) of 0.994-0.999 in the linear range of 5-2000μg/L, low limits of detection of 0.5-1μg/L and acceptable recoveries in the range of 79.42%-107.52%. The proposed method was successfully applied for the pretreatment of trace NSAIDs in real water and milk samples, and the results demonstrated the potential of the synthesized HDES for the extraction and determination of contaminants in aqueous samples. This study involved multiple reactions and reactants, such as N-Methyl-N,N-dioctyloctan-1-aminium chloride (cas: 5137-55-3Safety of N-Methyl-N,N-dioctyloctan-1-aminium chloride).

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. 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.Safety of N-Methyl-N,N-dioctyloctan-1-aminium chloride

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