Tag: 100-200

High-throughput macromolecular polymorph screening via an NMR and X-ray powder diffraction synergistic approach: the case of human insulin co-crystallized with resorcinol derivatives was written by Spiliopoulou, Maria;Valmas, Alexandros;Triandafillidis, Dimitris-Panagiotis;Fili, Stavroula;Christopoulou, Magdalini;Filopoulou, Aikaterini J.;Piskopou, Anastasia;Papadea, Polyxeni;Fitch, Andrew N.;Beckers, Detlef;Degen, Thomas;Gozzo, Fabia;Morin, Mickael;Reinle-Schmitt, Mathilde L.;Karavassili, Fotini;Rosmaraki, Eleftheria;Chasapis, Christos T.;Margiolaki, Irene. And the article was included in Journal of Applied Crystallography in 2021.Formula: C6H5ClO2 The following contents are mentioned in the article:

Regular injections of insulin provide life-saving benefits to millions of diabetics. Apart from native insulin and insulin analog formulations, microcrystalline insulin suspensions are also com. available. The onset of action of the currently available basal insulins relies on the slow dissociation of insulin hexamers in the s.c. space due to the strong binding of small organic ligands. With the aim of identifying insulin-ligand complexes with enhanced pharmacokinetic and pharmacodynamic profiles, the binding affinity of two resorcinol-based mols. (4-chlororesorcinol and 4-bromoresorcinol) and the structural characteristics of insulin upon co-crystallization with them were investigated in the present study. ‘In solution’ measurements were performed via saturation transfer difference (STD) NMR. Co-crystallization upon pH variation resulted in the production of polycrystalline precipitates, whose structural characteristics (i.e. unit-cell symmetry and dimension) were assessed. In both cases, different polymorphs (four and three, resp.) of monoclinic symmetry (P2₁ and C2 space groups) were identified via X-ray powder diffraction. The results demonstrate the efficiency of a new approach that combines spectroscopy and diffraction techniques and provides an innovative alternative for high-throughput examination of insulin and other therapeutic proteins. This study involved multiple reactions and reactants, such as 4-Chlororesorcinol (cas: 95-88-5Formula: C6H5ClO2).

4-Chlororesorcinol (cas: 95-88-5) 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. 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.Formula: C6H5ClO2

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

A room temperature acetone sensor based on synthesized tetranitro-oxacalix[4]arenes: Thin film fabrication and sensing properties was written by Sen, S.;Comert Onder, F.;Capan, R.;Ay, M.. And the article was included in Sensors and Actuators, A: Physical in 2020.Name: 4-Chlororesorcinol The following contents are mentioned in the article:

Tetranitro-oxacalix[4]arenes were prepared to determine their thin film fabrication and gas sensing applications. Firstly, tetranitro-oxacalix[4]arenes (1-3) were synthesized via nucleophilic aromatic substitution reaction (SNAr) using substituted resorcinol derivatives and 1,5-difluoro-2,4-dinitrobenzene with moderate to high yields. Later, successfully synthesized materials were utilized to construct thin films using the spin coating method and the characterization of the deposited films was performed with UV-vis and surface plasmon resonance (SPR). Characterization results indicated that high-quality spin-coated thin films were prepared using these materials. The sensing abilities of the spin-coated thin films of tetranitro-oxacalix[4]arenes (1-3) were tested using the SPR method for volatile organic vapors of acetone, chloroform, toluene, ethanol and benzene. High concentration sensitivity values of 0.0700 x 10-3, 0.1001 x 10-3 and 0.8653 x 10-3 with normalized response/ppm unit for acetone vapor were obtained for thin films (1-3), resp. The sensors obtained using especially thin films 1 and 3 showed high responses toward acetone even at low concentration ranges between 3.8-15.2 ppm. These sensors have the advantages of high sensitivity, reusability and reproducibility of results which make them compatible for practical acetone-detection applications. This study involved multiple reactions and reactants, such as 4-Chlororesorcinol (cas: 95-88-5Name: 4-Chlororesorcinol).

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

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

Multifunctional waterborne polyurethane films: Amine-response, thermal-driven self-healing and recyclability was written by Sai, Futao;Zhang, Haitao;Qu, Jianbo;Wang, Jianyong;Zhu, Xiuzhong;Bai, Yang;Ye, Peng. And the article was included in Applied Surface Science in 2022.Synthetic Route of C6H9ClO3 The following contents are mentioned in the article:

Currently, the preparation and application of functional waterborne polyurethane has become a research hotspot in the field of polyurethane. In the present work, different weight ratios of diacetyl oxime and coumarin diol were used as the reactive filler with isophorone diisocyanate (IPDI) and polypropylene glycol (PPG) to prepare superior amine-response, self-healing and recyclable waterborne polyurethane films (WPU-x). Dynamic mech. anal. was carried out to identify the self-healing properties of WPU-x. It was revealed that the WPU-2 film showed an excellent self-healing capability based on the combination of the mobility of the soft segment, dynamic reaction of oxime carbamate bond and hydrogen bonds, and the mech. properties self-healing efficiency can reach 91.11% after self-healing at 90°C for 7 h. UV testing and fluorescence imaging results showed that WPU-2 film exhibit a rapid and concentration-dependent response to dimethylamine (DMA), and it also showed varying degrees of response to other organic amines. The WPU-2 film could be readily applied in cold chain transportation of shrimp and fish for real-time and visual monitoring the freshness of seafoods. At the same time, the WPU-2 film could be recycled via hot-pressing and solution casting. Therefore, this strategy provides some insights for preparing multi-functional waterborne polyurethane. 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. 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.Synthetic Route of C6H9ClO3

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

Facile self-crosslinking to improve mechanical and durability of polynorbornene for alkaline anion exchange membranes was written by Huang, Shengmei;He, Xiaohui;Cheng, Changwen;Zhang, Feng;Guo, Yan;Chen, Defu. And the article was included in International Journal of Hydrogen Energy in 2020.Synthetic Route of C6H12BrCl The following contents are mentioned in the article:

Crosslinking is a valid approach to enhance the mech. and durability performance of anion exchange membranes (AEMs). Herein, a facile and effective self-crosslinking strategy, with no need for an addnl. crosslinker or a catalyzer, is proposed. A series of tunable self-crosslinking and ion conduction polynorbornene membranes are designed. The 5-norbornene-2-methylene glycidyl ether (NB-MGE) component which affords self-crosslinking enhances dimensional stability, while the flexible 5-norbornene-2-alkoxy-1-hexyl-3-Me imidazolium chloride (NB-O-Im⁺Cl^–) hydrophilic unit contributes high conductivity The crosslinking significantly decreases the water uptake, and water swelling ratio provides excellent solvent-resistance and enhances the thermal and mech. properties. Addnl., crosslinked rPNB-O-Im-x AEMs exhibit desirable alk. stability. Impressively, the rPNB-O-Im-30 (IEC = 1.377) shows a moderate ion conductivity (61.8 m S cm^-1, 80°C), with a suppressed water absorption and 88.17% initial OH^– conductivity is maintained after treated for 240 h with a 1.0 M NaOH solution at 60°C. Suitably assessed of rPNB-O-Im-30 AEM reveals a 98.4 mW cm^-2 peak power d. reached at a c.d. of about 208 mA cm^-2. The report offers a facile and effectual preparative technique for preparing dimensional and alk. stable AEMs for fuel cells applications. This study involved multiple reactions and reactants, such as 1-Bromo-6-chlorohexane (cas: 6294-17-3Synthetic Route of C6H12BrCl).

1-Bromo-6-chlorohexane (cas: 6294-17-3) 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 C6H12BrCl

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

Defined Ion-Transfer Voltammetry of a Single Microdroplet at a Polarized Liquid/Liquid Interface was written by Ma, Yamin;Liu, Cheng;Wang, Lishi. And the article was included in Analytical Chemistry (Washington, DC, United States) in 2022.Quality Control of Tetramethylammonium chloride The following contents are mentioned in the article:

A strategy for the fast anal. of ion transfer/facilitated ion transfer toward a tiny (femtoliter) water-in-oil droplet has been established. This scenario is embodied by the fusion of a w/o microdroplet at the micro liquid/liquid (L/L) interface, with the use of Fourier transform fast-scan cyclic voltammetry (FT-FSCV) to express the apparent half-wave potentials of anions or cations encapsulated inside the w/o microdroplet. First, the half-wave potential is in strict accordance with the transfer Gibbs free energy of either cations or anions. Second, the half-wave potential has been found to be pos. proportional to the logarithmic concentration of ions, shedding thermodn. insight into ion transfer. Third, as an instance of multivalent biopolymers, the transfer of protamine inside the single w/o microdroplet has been investigated. Obvious discrepancies in the behaviors of the fusion impacts at different pH, as well as in the absence and presence of the cationic surfactant DNNS^–, are revealed. The internal mechanism of protamine transfer has been thoroughly investigated. This work proposes a strategy to sensitively and quickly determine the transfer Gibbs energy and the concentration of ions encapsulated in a single microdroplet, and it provides the possibility of analyzing the interfacial transfer properties of trace biomacromols. inside an aqueous micro- or nanoscale droplet. This study involved multiple reactions and reactants, such as Tetramethylammonium chloride (cas: 75-57-0Quality Control of 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. 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 Tetramethylammonium chloride

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

Synthesis and Characterization of Potential Related Substances of the Antiplatelet Agent Clopidogrel Bisulfate was written by Metil, Dattatray S.;Sampath, Aalla;Reddy, Ch. Venkata Ramana;Bandichhor, Rakeshwar. And the article was included in ChemistrySelect in 2018.Recommanded Product: (S)-Methyl 2-amino-2-(2-chlorophenyl)acetate The following contents are mentioned in the article:

Synthesis of antiplatelet agent clopidogrel bisulfate (I) used for the treatment of platelet aggregation to prevent blood clotting. During the laboratory process development of clopidogrel bisulfate, there was identification of six potential related substances methyl-2-(2-amino-2-(2-chlorophenyl)acetamido)-2-(2-chlorophenyl)acetate, Me 2-(bis (2-(thiophen-2-yl)ethyl)amino)-2-(2-chlorophenyl) acetate hydrochloride, Me (S)-2-(2-chlorophenyl)-2-(methyl(2-(thiophen-2-yl)ethyl)amino)acetate, (S)-methyl-2-(2-chlorophenyl)-2-(2-(hydroxymethyl)-6,7-dihydrothieno[3,2-c]pyridin5(4H)-yl)acetatebisulfate, (S)-methyl-2-(2-chlorophenyl)-2-(2-(hydroxymethyl)-6,7-dihydrothieno[3,2-c] pyridin-5(4H)-yl), (S)-5-(1-(2-chlorophenyl)-2-methoxy-2-oxoethyl)-4,5,6,7-tetrahydrothieno[3,2-c] pyridine-2-sulfonic acid which were formed at various stages of the preparation of clopidogrel bisulfate. Out of these, three related substances methyl-2-(2-amino-2-(2-chlorophenyl)acetamido)-2-(2-chlorophenyl)acetate, Me 2-(bis(2-(thiophen-2-yl)ethyl)amino)-2-(2-chlorophenyl) acetate hydrochloride, (S)-5-(1-(2-chlorophenyl)-2-methoxy-2-oxoethyl)-4,5,6,7-tetrahydrothieno[3,2-c]pyridine-2-sulfonic acid were found to be unprecedented. The present work detailed the synthesis of these related substances by employing efficient synthetic strategies and also their control strategies during clopidogrel manufacturing This study involved multiple reactions and reactants, such as (S)-Methyl 2-amino-2-(2-chlorophenyl)acetate (cas: 141109-14-0Recommanded Product: (S)-Methyl 2-amino-2-(2-chlorophenyl)acetate).

(S)-Methyl 2-amino-2-(2-chlorophenyl)acetate (cas: 141109-14-0) 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. 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.Recommanded Product: (S)-Methyl 2-amino-2-(2-chlorophenyl)acetate

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

Difluorobis(pentafluoroethyl)phosphoranide: A Promising Building Block for Phosphoranidometal Complexes was written by Kessler, Mira;Stammler, Hans-Georg;Neumann, Beate;Roeschenthaler, Gerd-Volker;Hoge, Berthold. And the article was included in Inorganic Chemistry in 2021.Electric Literature of C4H12ClN The following contents are mentioned in the article:

Despite the fact that different metal tetrafluorophosphoranides, M[PF₄] (M = Cs, Ag, K), decompose readily, the authors successfully enhanced the stability of such species by the replacement of two F atoms with electron withdrawing pentafluoroethyl groups. Thus, AgF adds to P(C₂F₅)₂F, yielding Ag[P(C₂F₅)₂F₂], which served as a starting material for the synthesis of mono-, bis-, and tris[difluorobis(pentafluoroethyl)phosphoranido]silver complexes. Addition of 2,2′-bipyridine allowed for the isolation of stable [Ag(bipy){P(C₂F₅)₂F₂}], whereas the reaction with the chlorides [NMe₄]Cl and CoCl₂ afforded the bis- and trisphosphoranidoargentates [NMe₄][Ag{P(C₂F₅)₂F₂}₂(OEt₂)] and [Co(NCMe)₆][Ag{P(C₂F₅)₂F₂}₃]·2MeCN, resp. Altogether, the difluorobis(pentafluoroethyl)phosphoranido moiety serves as a novel, small, noncyclic phosphoranido ligand. It provided access to the 1st homoleptic phosphoranidometal complex, [Co(NCMe)₆][Ag{P(C₂F₅)₂F₂}₃]·2MeCN, which itself features the unusual structural motif of an [AgX₃]^2- ion. This study involved multiple reactions and reactants, such as Tetramethylammonium chloride (cas: 75-57-0Electric Literature of 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. Aliphatic organochlorides are often alkylating agents as chlorine can act as a leaving group, which can result in cellular damage.Electric Literature of C4H12ClN

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

Polymerizable deep eutectic solvent-based mechanically strong and ultra-stretchable conductive elastomers for detecting human motions was written by Zhang, Kaili;Li, Ren’ai;Chen, Guangxue;Yang, Jimin;Tian, Junfei;He, Minghui. And the article was included in Journal of Materials Chemistry A in 2021.HPLC of Formula: 75-57-0 The following contents are mentioned in the article:

Conductive elastomers (CEs) with strong mech. properties have been fabricated and used in flexible electronics. However, the development of CEs with both super-high mech. strength and extreme stretchability remains challenging. This paper reports on the development of a series of mech. strong and tough CEs based on photopolymerizable deep eutectic solvents (PDESs) with dense hydrogen bonding interactions. One of these CEs exhibits the highest reported mech. performance for elastomers, with tensile strength, strain at break and toughness up to 31.21 MPa, 3645% and 615 MJ m^-3, resp. Notably, this CE tolerates puncture and can lift a 10.5 kg weight (9500 times its own weight) without any failure. In addition, the series of CEs also shows excellent transparency (>94% in the visible range), favorable conductivity (0.007-0.04 S m^-1), tunable stretchability (strain from 22% to 6164%) and good self-healing capability (elec. healing efficiency of 99% within 0.26 s). In view of the comprehensive properties of the CEs, we demonstrate the practical suitability of CEs by including them in a strain sensor to detect human motion. Based on their extremely facile preparation process and practical functionalities, we believe that CEs will not only contribute new methods for the development of mech. strong conductors, but also open up novel avenues for flexible electronics. This study involved multiple reactions and reactants, such as Tetramethylammonium chloride (cas: 75-57-0HPLC of Formula: 75-57-0).

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

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

In-situ formation of a hydrophobic deep eutectic solvent based on alpha terpineol and its application in liquid-liquid microextraction of three β-blockers from plasma samples was written by Jouyban, Abolghasem;Ali Farajzadeh, Mir;Afshar Mogaddam, Mohammad Reza;Khodadadeian, Fariba;Nemati, Mahboob;Khoubnasabjafari, Maryam. And the article was included in Microchemical Journal in 2021.Recommanded Product: Tetramethylammonium chloride The following contents are mentioned in the article:

A new microextraction procedure based on liquid-liquid microextraction using a deep eutectic solvent has been used for the extraction of three β-blockers (atenolol, propranolol, and metoprolol) from plasma samples. The enriched analytes were analyzed by gas chromatog.-mass spectrometry. In this study, both of the microextraction and synthesis processes were accelerated by using microwave radiations. In this procedure, 5 mL diluted plasma sample was transferred into a glass test tube and it was mixed with 0.20 g tetramethylammonium chloride. Then 0.5 mL of DMF (as a co-disperser) was mixed with 610μL alpha terpineol and the mixture was dispersed into the solution to form a homogenous solution The tube was placed under microwave radiations for 1 min. By doing so, tetramethylammonium chloride-alpha terpineol deep eutectic solvent was formed in sample solution as tiny droplets and the analytes were extracted into them. Then the tube was cooled with tap water and centrifuged for 5 min at 5000 rpm. Finally 1μL of the deep eutectic solvent was injected into the determination system. Low limits of detection (0.130-0.205 ng mL-1) and quantification (0.435-0.692 ng mL-1), high extraction recovery (72-86%), and good precision (relative standard deviation ≤ 5.3%) were obtained. The introduced method was effectively applied for determination of the β-blockers concentrations in plasma samples. 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. Organic chlorides are compounds containing a carbon-chlorine bond, which are widely used in the oil field as a wax dissolver. 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.Recommanded Product: Tetramethylammonium chloride

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

Synthesis of polymeric ionic liquids with unidirectional chain topology by AB step growth polymerization was written by Suckow, M.;Roy, M.;Sahre, K.;Haeussler, L.;Singha, N.;Voit, B.;Boehme, F.. And the article was included in Polymer in 2017.Quality Control of 1-Bromo-6-chlorohexane The following contents are mentioned in the article:

Poly(ionic liquid)s with alkyl imidazolium moieties in the main chain were synthesized by step growth addition polymerization of the AB monomers 1-(4-chlorobutyl)-1H-imidazole, 1-(6-chlorohexyl)-1H-imidazole, and 1-(6-bromohexyl)-1H-imidazole in the melt. The molar masses of the polymers were controlled by adding 1-butyl-1H-imidazole as monofunctional chain stopper. The bromine containing monomer polymerized spontaneously at room temperature whereas the chlorine containing monomers were sufficiently stable up to 40 °C. This could be evidenced by DSC measurements which showed a broad exothermal peak above 40 °C caused by the polymerization MALDI-TOF investigations proved that dissociation of the alkyl imidazolium groups which might disturb the expected directional chain topol. (AB-AB-AB…) did not occur. This is an important precondition for the intended crosslinking free grafting reactions of the AB monomers on halide containing polymers without any danger of gelation. Addnl., the results of the MALDI-TOF investigations indicated partial complexation of the polymer with the matrix and structural rearrangements during the measurements which converted the ionic imidazolium moieties into neutral moieties. The thermal behavior of the poly(ionic liquid)s has proved to be dependent on the length of the alkyl linking group between the imidazolium moieties and the type of counter ion. This study involved multiple reactions and reactants, such as 1-Bromo-6-chlorohexane (cas: 6294-17-3Quality Control of 1-Bromo-6-chlorohexane).

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

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