Tag: M.W=100-200

Electric Literature of 873-75-6, Chemo-enzymatic cascade processes are invaluable due to their ability to rapidly construct high-value products from available feedstock chemicals in a one-pot relay manner. 873-75-6, Name is (4-Bromophenyl)methanol, SMILES is OCC1=CC=C(Br)C=C1, belongs to bromides-buliding-blocks compound. In a article, author is Chen, Chaochao, introduce new discover of the category.

Non-CTAB synthesized gold nanorods-based immunochromatographic assay for dual color and on-site detection of aflatoxins and zearalenones in maize

New developing gold nanorods (AuNRs) are promising alternatives of gold nanospheres in the immunochromatographic assay (ICA) for the rapid screening of mycotoxins in cereals because of their unique threedimensional structure. Nevertheless, cetyltrimethylammonium bromide (CTAB) was used to prepare of AuNRs without exception in previous reports, resulting in poor biocompatibility, cytotoxicology and difficulty for further functionalization. In this study, we used non-CTAB synthesized AuNRs with different colors as labels on ICA for the screening of four aflatoxins and total zearalenones. The results showed the non-CTAB synthesized AuNRs was more stable and easier for further functionalization than CTAB-based AuNRs. The visual detection limits of developed AuNR-ICA were 0.5 ng/mL for AFB1 and 1 ng/mL for ZEN, and the quantitative detection limits were 0.05 ng/mL for AFB1 and 0.27 ng/mL for ZEN, respectively. The assay could accomplish qualitative detection and quantitative analysis within 20 min. The results of the AuNR-ICA were comparable to those of HPLC-MS/MS for naturally contaminated maize samples, indicating the feasibility of the AuNR-ICA in practical use. Given these performances, the non-CTAB synthesized AuNRs showed great potential for use as an effective label in the ICA development.

Electric Literature of 873-75-6, One of the oldest and most widely used commercial enzyme inhibitors is aspirin, which selectively inhibits one of the enzymes involved in the synthesis of molecules that trigger inflammation. you can also check out more blogs about 873-75-6.

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, SDS of cas: 927-58-2, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 927-58-2, Name is 4-Bromobutyryl chloride, molecular formula is C4H6BrClO. In an article, author is Al Dine, Walaa Nasser,once mentioned of 927-58-2.

Self-Limited Grafting of Sub-Monolayers via Diels-Alder Reaction on Glassy Carbon Electrodes: An Electrochemical Insight

The grafting of molecular monolayers is critical for the functionalization of surfaces. In molecular electrochemistry, the surface modification of electrodes and the way molecules are attached to the electrode surface are highly critical to electron transfers and electrochemical reactions. In this paper, sub-monolayers were covalently grafted onto glassy carbon (GC) electrodes via Diels-Alder cycloaddition with two soluble dienophiles, that is, propargyl bromide and ethynyl ferrocene. Such an approach is clean (no by-product, no catalyst/additive) and occurs under mild conditions by heating at 50 degrees C in toluene for few hours. The as-modified electrodes were thoroughly characterized by FTIR, XPS, and cyclic voltammetry using both millimetric GC electrodes and ultra-microelectrodes. Cyclic voltammetry gave access to surface coverage and clearly evidenced the covalent grafting of sub-monolayers. The grafting of functional sub-monolayers via Diels- Alder cycloaddition could be easily extended to various functionalities and carbons to prepare electrochemical sensors or electrocatalytic surfaces.

If you¡¯re interested in learning more about 927-58-2. The above is the message from the blog manager. SDS of cas: 927-58-2.

Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 615-36-1, Name is 2-Bromoaniline, SMILES is NC1=CC=CC=C1Br, belongs to bromides-buliding-blocks compound. In a document, author is Snider, Adam, introduce the new discover, SDS of cas: 615-36-1.

The electrokinetic properties of cationic surfactants adsorbed on a hydrophobic substrate: effect of chain length and concentration

Electrokinetic (EK) properties, such as the electro-osmotic flow (EOF), are influenced by surfactant adsorption at the solid-liquid interface. With the growing popularity of poly(methyl methacrylate) (PMMA) as the substrate for polymeric-based microfluidics, it is important to understand the effect of surfactants on EOF in these devices. Here, we investigate the effect of surfactant chain length and concentration on the electro-osmotic (EO) mobility induced by three cationic surfactants cetyl trimethylammonium bromide (CTAB), trimethylammonium bromide (TTAB), dodecyl trimethylammonium bromide (DTAB) in PMMA microcapillaries. The EO mobility curve as a function of concentration shows three regimes. First, at very low concentrations below 0.002 mM, the mobility is constant and approximately equal to the value obtained with the surfactant-free electrolyte (1 mM KCl). Next, the EOF reverses and mobility increases linearly with surfactant concentration. Finally, the mobility reaches a plateau at a concentration well below surfactant CMC (0.2-mM CTAB, 0.5-mM TTAB and 2-mM DTAB) and decreases at the vicinity of CMC. Our results show that the rate of change in mobility with respect to concentration is a linear function of chain length and increases with longer-chain surfactants. In addition, we deduce the magnitude of Van der Waals or cohesive energy between the adsorbed alkyl chains from the EO mobility values. For the alkyl trimethylammonium surfactants adsorbed on the hydrophobic surface of PMMA, this energy was found to be 0.114 kT smaller than the reported value for ionic surfactants adsorbed on a hydrophilic surface.

The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 615-36-1 is helpful to your research. SDS of cas: 615-36-1.

Application of 4286-55-9, The transformation of simple hydrocarbons into more complex and valuable products via catalytic C¨CH bond functionalisation has revolutionised modern synthetic chemistry. 4286-55-9, Name is 6-Bromohexan-1-ol, SMILES is OCCCCCCBr, belongs to bromides-buliding-blocks compound. In a article, author is Lin, Mengxin, introduce new discover of the category.

Phosphatidylethanolamine binding protein 1 enhances sensitivity of gastric cancer cell to 5-fluorouracil via inhibition of cell proliferation, migration and invasion

Purpose: To determine the association between phosphatidylethanolamine binding protein 1, which is an Raf kinase inhibitor protein (RKIP), and 5-fluorouracil (5-FU) via analysis of the association between RKIP and clinical responses in individuals treated using fluorouracil-based chemotherapy. Methods: Human gastric cancer cell lines MGC-803 and SGC-7901 were used in this study. Cell viability was measured using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Apoptosis and migration were determined with flow cytometry and Transwell chamber assays, respectively. The mRNA and protein expressions of apoptosis-related factors were assayed using real-time polymerase chain reaction (RT-PCR) and Western blotting, respectively, while the expression of RKIP was determined by immunohistochemical staining. Results: Chemotherapeutic drug (5-FU) treatment induced low RKIP expression levels in tumorigenic GC cells, thereby sensitizing the cells to apoptosis (8.57 vs 1.25 %, p < 0.01). The highest RKIP level correlated well with initiation of apoptosis (4.20 vs 1.25 %, p < 0.01). Following in vitro downregulation of RKIP, there was increase in the viability and proliferation of RKIP-inhibited cells over time, and these changes were linked to alterations in cell cycle phases and increased optical density in MTT proliferation assay (1.55 vs 1.18, p < 0.01). In vitro Transwell assay measurement revealed an association between RKIP downregulation and enhancement of cell migration potential (652 vs 436, p < 0.01). Ectopic RKIP expression restored the apoptotic sensitivity of resistant cells (14.30 vs 1.36 %, p < 0.01). This sensitization was annulled by upregulation of survival routes. Reduction of RKIP by expression of antisense and siRNA conferred resistance on cancer cells sensitive to 5-FU-mediated apoptosis (6.88 vs 2.13 %, p < 0.01). Conclusion: Thus, RKIP is a promising therapeutic strategy for improving the efficacy of clinically relevant chemotherapeutic drugs for GC. Application of 4286-55-9, The reactant in an enzyme-catalyzed reaction is called a substrate. Enzyme inhibitors cause a decrease in the reaction rate of an enzyme-catalyzed reaction.I hope my blog about 4286-55-9 is helpful to your research.

Electric Literature of 2067-33-6, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 2067-33-6, Name is 5-Bromopentanoic acid, SMILES is O=C(O)CCCCBr, belongs to bromides-buliding-blocks compound. In a article, author is Gupta, Ashish, introduce new discover of the category.

Structural and electrochemical studies of bromide derived ionic liquid-based gel polymer electrolyte for energy storage application

In the present studies, poly (vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP), ionic liquid {1-Ethyl-3methylimidazolium bromide} (EMIM)(Br), and magnesium perchlorate Mg(ClO4)(2) as salt were used to synthesize free standing electrolyte films by using solution cast technique. The prepared electrolyte films were investigated by using various structural and electrochemical techniques like scanning electron microscopy (SEM), X-ray diffraction analysis (XRD), Fourier transform infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC) as well as ionic and temperature dependence studies. It has been observed that addition of ionic liquid significantly increases the properties like ionic conductivity, thermal stability, transparency etc. The maximum room temperature ionic conductivity for the optimized system was found to be of the order of 2.05 x 10-2 S cm-1 which is suitable for device fabrication point of view. The optimized electrolyte films are suitable for supercapacitor application.

Electric Literature of 2067-33-6, Consequently, the presence of a catalyst will permit a system to reach equilibrium more quickly, but it has no effect on the position of the equilibrium as reflected in the value of its equilibrium constant.I hope my blog about 2067-33-6 is helpful to your research.

Application of 2695-47-8, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 2695-47-8, Name is 6-Bromo-1-hexene, SMILES is C=CCCCCBr, belongs to bromides-buliding-blocks compound. In a article, author is Woelk, Christian, introduce new discover of the category.

Enhanced chain packing achieved via putative headgroup ion-triplet formation in binary anionic lipid/cationic surfactant mixed monolayers

Lipid/surfactant miscibility was investigated in monolayers composed of binary mixtures of dipahnitoylpho-sphatidylglycerol (DPPG) and dihexadecyldimethylammonium bromide (DHDAB). Langmuir monolayers formed from biomimetic DPPG/DHDAB mixtures based on the anionic:cationic lipid ratios observed in the bacterium Staphylococcus aureus (7:3 and 1:1) were examined alongside those of the pure amphiphiles and a surfactant rich 3:7 mixture. Using a combination of GIXD, TRXF and IRRAS, DPPG/DHDAB 1:1 monolayers were found to form a more stabilised condensed phase compared to pure DPPG, which was composed entirely of electrostatically neutral ion pairs, analogous to the so-called catanionic amphiphiles spontaneously formed by single-chain surfactants with opposing headgroup charges. Despite the lack of lateral charge repulsion the ion paired phase of DPPG/DHDAB exhibited slightly looser chain packing that was observed for DPPG indicating a significant steric effect on packing geometry caused by ion pair formation. Surprisingly, the 7:3 mixture of DPPG/DHDAB formed a completely condensed phase, with no isotherm transitions, in which the chain packing was significantly closer than was found for either DPPG or the totally ion paired monolayer. It is postulated that this mixture forms a distinct DPPG/DHDAB/DPPG ion triplet phase in which the overall negative charge is delocalised across the headgroups. Vesicles composed from the 7:3 mixture formed highly stable dispersions with an increased gel to liquid crystalline phase transition temperature with respect to its pure components. Increasing the proportion of DHDAB above 50 mol% led to demixing between the condensed ion paired phase and the more fluid surfactant, as was clearly observed in epifluorescence images taken of the surface films.

Application of 2695-47-8, Because enzymes can increase reaction rates by enormous factors and tend to be very specific, typically producing only a single product in quantitative yield, they are the focus of active research.you can also check out more blogs about 2695-47-8.

Application of 2623-87-2, Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, 2623-87-2, Name is 4-Bromobutanoic acid, SMILES is O=C(O)CCCBr, belongs to bromides-buliding-blocks compound. In a article, author is Kim, D. G., introduce new discover of the category.

Synthesis and Halogenocyclization of 2-Allyloxyquinoline Derivatives

Alkylation of 4,8-dimethyl- and 4,6,8-trimethylquinolin-2(1H)-one with allyl bromide in the presence of a base proceeds at the oxygen and nitrogen atoms with the predominant formation of the O-isomer. The reaction of 2-allyloxyquinolines with halogens leads to the formation of oxazolo[3,2-a]quinolinium salts. Structure of 1-bromomethyl-5,7,9-trimethyl-1,2-dihydro[1,3]oxazolo[3,2-a]quinolinium iododibromide was established by single crystal X-ray diffraction method.

Application of 2623-87-2, Consequently, the presence of a catalyst will permit a system to reach equilibrium more quickly, but it has no effect on the position of the equilibrium as reflected in the value of its equilibrium constant.I hope my blog about 2623-87-2 is helpful to your research.

Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 2032-35-1, Name is 2-Bromo-1,1-diethoxyethane, molecular formula is C6H13BrO2, belongs to bromides-buliding-blocks compound. In a document, author is Zhang Yi, introduce the new discover, Safety of 2-Bromo-1,1-diethoxyethane.

Supramolecular Assemblies of Multi-Charged Cyclodextrins

As a class of macrocyclic host with excellent water solubility, low biotoxicity and high charge density, multi-charged cyclodextrins have been extensively studied because they can interact with organic/inorganic/biological molecules through multiple synergistic forces such as the hydrophobic cavities and electrostatic interactions to construct the smart supramolecular assemblies with stable topology, functional diversity and stimulus responsiveness. The latest research progress of pH-, photo-, enzyme-, redox-, magnetic- and multi-stimulus responsive smart supramolecular assemblies, which are constructed by typical positively/negatively charged and amphiphilic multi-charged cyclodextrins including their application in the fields of drug delivery, controlled release and sensory detection is introduced, and the challenges and future developments of multi-charged cyclodextrin smart supramolecular assemblies are discussed.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law. In my other articles, you can also check out more blogs about 2032-35-1. Safety of 2-Bromo-1,1-diethoxyethane.

In an article, author is Shibaev, Andrey, V, once mentioned the application of 615-36-1, Name: 2-Bromoaniline, Name is 2-Bromoaniline, molecular formula is C6H6BrN, molecular weight is 172.0225, MDL number is MFCD00007632, category is bromides-buliding-blocks. Now introduce a scientific discovery about this category.

Disruption of Cationic/Anionic Viscoelastic Surfactant Micellar Networks by Hydrocarbon as a Basis of Enhanced Fracturing Fluids Clean-Up

Studies of the effects produced by the solubilization of hydrophobic substances by micellar aggregates in water medium are quite important for applications of viscoelastic surfactant solutions for enhanced oil recovery (EOR), especially in hydraulic fracturing technology. The present paper aims at the investigation of the structural transformations produced by the absorption of an aliphatic hydrocarbon (n-decane) by mixed wormlike micelles of cationic (n-octyltrimethylammonium bromide, C8TAB) and anionic (potassium oleate) surfactants enriched by C8TAB. As a result of contact with a small amount (0.5 wt%) of oil, a highly viscoelastic fluid is transformed to a water-like liquid. By small-angle neutron scattering (SANS) combined with cryo-TEM, it was shown that this is due to the transition of long wormlike micelles with elliptical cross-sections to ellipsoidal microemulsion droplets. The non-spherical shape was attributed to partial segregation of longer- and shorter-tail surfactant molecules inside the surfactant monolayer, providing an optimum curvature for both of them. As a result, the long-chain surfactant could preferably be located in the flatter part of the aggregates and the short-chain surfactant-at the ellipsoid edges with higher curvature. It is proven that the transition proceeds via a co-existence of microemulsion droplets and wormlike micelles, and upon the increase of hydrocarbon content, the size and volume fraction of ellipsoidal microemulsion droplets increase. The internal structure of the droplets was revealed by contrast variation SANS, and it was shown that, despite the excess of the cationic surfactant, the radius of surfactant shell is controlled by the anionic surfactant with longer tail. These findings open a way for optimizing the performance of viscoelastic surfactant fluids by regulating both the mechanical properties of the fluids and their clean-up from the fracture induced by contact with hydrocarbons.

If you are interested in 615-36-1, you can contact me at any time and look forward to more communication. Name: 2-Bromoaniline.

Let¡¯s face it, organic chemistry can seem difficult to learn, Recommanded Product: 108-85-0, Especially from a beginner¡¯s point of view. Like 108-85-0, Name is Bromocyclohexane, molecular formula is bromides-buliding-blocks, belongs to bromides-buliding-blocks compound. In a document, author is Okuda, Yasuhiro, introducing its new discovery.

Synthesis of Ph2P(O)-stabilized Ynamines via C(sp)-N Bond Formation and Their Dephosphorylative Copper-catalyzed Click Reaction

A facile and versatile synthesis of ynamines via C(sp)-N bond formation was established. We installed an electron-withdrawing phosphoryl group onto the ynamines to isolate them by column chromatography. Phosphoryl ynamines were synthesized by treatment of bromo(phosphoryl)ethyne with diarylamine in the presence of K3PO4. Single-crystal X-ray analysis indicated double-bond characters of N-C, C=C, and C-P bonds in the N-C=C-P moiety. Phosphoryl ynamines could be used as terminal ynamine precursors in dephosphorylation/copper-catalyzed click reaction to form the corresponding 4-amino-1,2,3-triazoles in moderate yields.

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