Month: May 2021

Chemistry is an experimental science, Computed Properties of C8H5Br, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 766-96-1, Name is 1-Bromo-4-ethynylbenzene, molecular formula is C8H5Br, belongs to bromides-buliding-blocks compound. In a document, author is Haq, Samina Hyder.

Antioxidant, Anticancer Activity and Phytochemical Analysis of Green Algae, Chaetomorpha Collected from the Arabian Gulf

Seaweeds are a group of marine multicellular algae; the presence of antioxidant phytochemical constituents in Seaweed Chaetomorpha sp. extracts has received attention for their role in the prevention of human diseases. This study explores the phytochemical constituents, antioxidant, and anticancer properties of the Cladophoraceae, Chaetomorpha sp. Energy dispersive x-ray spectroscopy (EDX), and Gas chromatography-mass spectrometry (GC/MS) were performed to study the chemical structure and chemical formula. Different concentrations of ethanol and aqueous extracts of Chaetomorpha were used to estimate antioxidant activity by 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity and total flavonoid, phenolic, and tannins content assays. Anti-tumor activity against breast cancer cell lines (MCF-7 and MDA-MB-231) was assessed by 3-(4,5-Dimethylthiazol-2-cyl)-2,5-Diphenyltetrazolium Bromide (MTT) assay. The EDX analysis indicated the presence of oxygen, silicon, and calcium as dominant elements. Antioxidant assays indicated that the ethanol extracts of Chaetomorpha consisted of a total of 189.14 +/- 0.99 mg QE/g flavonoid content, 21.92 +/- 0.43 mg GAE/g phenolic content and 21.81 +/- 0.04 mg GAE/g tannins content. The DPPH radical scavenging assay exhibited higher antioxidant activity IC50 (9.41 +/- 0.54 mg/mL) in the ethanol extract. Moreover, it showed high anticancer activity by growth inhibition in the MDA-MB-231 breast cancer cell line and low IC50 (225.18 +/- 0.61 mu g/mL). GC/MS analysis revealed the presence of Dichloracetic acid (DCA) as the active antitumor constituent of Chaetomorpha sp.; other anticancer compounds identified were Oximes and L-alpha-Terpinol. The results revealed that the type of Chaetomorpha sp. studied here possesses very unique and novel constituents and active potent antitumor chemical constituents and it can act as a promising antioxidant and anticancer agent for future applications in pharmaceutical industries.

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 766-96-1. Computed Properties of C8H5Br.

Chemistry is the experimental science by definition. We want to make observations to prove hypothesis. For this purpose, we perform experiments in the lab. , Formula: C9H8BrNO4, 98475-07-1, Name is Methyl 2-(bromomethyl)-3-nitrobenzoate, molecular formula is C9H8BrNO4, belongs to bromides-buliding-blocks compound. In a document, author is Hong, Sung Joo, introduce the new discover.

Thermally-driven hybrid vapor absorption cycle: Simultaneous and flexible use of steam generation heat pump and refrigeration applications

For flexible use of a thermally driven absorption system for heating and cooling effects, a hybrid absorption cycle, which contains a sub-heat pump and a sub-refrigeration cycle, is proposed. Each sub-cycle shares a generator and a condenser, and the flow rate of the solution and the refrigerant entering each sub-cycle is adjusted by the general operating conditions, such as the heating source temperature and flow rate of the working fluid. The proposed hybrid absorption cycle introduced the solution distribution ratio to easily adjust the amount of the solution flow rate entering each sub-cycle, and as a result, the flexible control of the desired heating and cooling capacities was simultaneously achieved. We first proposed the experimental investigation using the pilot-scale hybrid absorption system for simultaneously producing 120 degrees C steam of approximately 110 kg/h and 8 degrees C cooling effect. The experimental analysis validified the steady-state theoretical model, and the theoretical simulation characterized the operating characteristics, such as the variations in three pressure levels, the circulation ratios, and the system performance in terms of the practical operating conditions and the defined solution distribution ratio. It was noted that the decrease in the solution distribution ratio, i.e., more amount of the solution entering the sub-refrigeration cycle than entering the sub-heat pump cycle, contributed the decrease in the COP of the sub-refrigeration cycle from 0.74 to 0.72, but brought about the increase in total COP from 0.53 to 0.60. It was concluded that all the parameters considered greatly influenced the heat transfer characteristics of the hybrid absorption cycle, and the heating and cooling effects could be flexibly controlled by the solution distribution ratio. The present study provides comprehensive and valid data for the further experimental investigations to determine main parameters that affect the performance characteristics of the proposed hybrid absorption cycle.

A reaction mechanism is the microscopic path by which reactants are transformed into products. Each step is an elementary reaction. In my other articles, you can also check out more blogs about 98475-07-1. Formula: C9H8BrNO4.

Application of 54962-75-3, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 54962-75-3, Name is 3-Bromo-5-(trifluoromethyl)aniline, SMILES is C1=C(C(F)(F)F)C=C(Br)C=C1N, belongs to bromides-buliding-blocks compound. In a article, author is Zhao, Xianyuan, introduce new discover of the category.

Competing Segregation of Br- and Cl- to a Surface Coated with a Cationic Surfactant: Direct Measurements of Ion and Solvent Depth Profiles

Ion-surface scattering experiments can be used to measure elemental depth profiles on the angstrom scale in complex liquid mixtures. We employ NICISS (neutral impact collision ion scattering spectroscopy) to measure depth profiles of dissolved ions and solvent in liquid glycerol containing the cationic surfactant tetrahexylammonium bromide (THA(+)/Br-) at 0.013 M and mixtures of NaBr + NaCl at 0.4 M total concentration. The experiments reveal that Br- outcompetes Cl- in its attraction to surface THA(+), and that THA(+) segregates more extensively when more Br- ions are present. Intriguingly, the depths spanned by THA(+), Br-, and Cl- ions generally increase with Br- bulk concentration, expanding from similar to 10 to similar to 25 angstrom for both Br- and Cl- depth profiles. This broadening likely occurs because of an increasing pileup of THA(+) ions in a multilayer region that spreads the halide ions over a wider depth. The experiments indicate that cationic surfactants enhance Br- and Cl- concentrations in the surface region far beyond their bulk-phase values, making solutions coated with these surfactants potentially more reactive toward gases that can oxidize the halide ions.

Application of 54962-75-3, Each elementary reaction can be described in terms of its molecularity, the number of molecules that collide in that step. The slowest step in a reaction mechanism is the rate-determining step.you can also check out more blogs about 54962-75-3.

Application of 106-37-6, As an important bridge between the micro and macro material world, chemistry is one of the main methods and means for humans to understand and transform the material world. 106-37-6, Name is 1,4-Dibromobenzene, SMILES is BrC1=CC=C(Br)C=C1, belongs to bromides-buliding-blocks compound. In a article, author is Guo, Lei, introduce new discover of the category.

General Method for Enantioselective Three-Component Carboarylation of Alkenes Enabled by Visible-Light Dual Photoredox/Nickel Catalysis

A visible-light-promoted photoredox/nickel protocol for the enantioselective three-component carboarylation of alkenes with tertiary and secondary alkyltrifluoroborates and aryl bromides is described. This redox-neutral protocol allows for facile and divergent access to a wide array of enantioenriched beta-alkyl-alpha-arylated carbonyls, phosphonates, and sulfones in high yields and excellent enantioselectivities from readily available starting materials. We also report a modular and enantioselective synthesis of flurbiprofen analogs and piragliatin lead compound to demonstrate synthetic utility. Experimental and computational mechanistic studies were performed to gain insights into the mechanism and origin of chemo- and enantioselectivity.

Application of 106-37-6, 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 106-37-6.

In an article, author is McAlpine, Michael D., once mentioned the application of 3296-90-0, Product Details of 3296-90-0, Name is Dibromoneopentyl Glycol, molecular formula is C5H10Br2O2, molecular weight is 261.9397, MDL number is MFCD00004688, category is bromides-buliding-blocks. Now introduce a scientific discovery about this category.

Black and Green Tea as Well as Specialty Teas Increase Osteoblast Mineralization with Varying Effectiveness

Many human studies suggest a benefit of tea consumption on bone health. The study objective was to compare the ability of different tea types to promote mineralization. Saos-2 cells underwent mineralization (5 days) in the presence of tea (white: WT, green: GT, black: BT, green rooibos: GR, or red rooibos: RR; 1 mu g/mL of polyphenols) or control. Total polyphenol content (TPC, Folin-Ciocalteu’s reagent), antioxidant capacity (2,2-diphenyl-1-picrylhydrazyl [DPPH] scavenging), mineralization (Alizarin Red staining), gene expression quantitative reverse transcription PCR (RT-qPCR), and cell activity (3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide assay) were determined. TPC was highest in GT and BT. The ability of each tea to inhibit DPPH also differed (WT, GT > RR) after normalizing for polyphenol quantity. Each tea increased mineralization and differences were observed among types (GT/BT/GR/RR > WT, GT = BT = GR, RR > BT/GT). mRNA expression of alkaline phosphatase (ALP) and ectonucleotide pyrophosphatase/phosphodiesterase (NPP1) remained unchanged, whereas osteopontin (OPN) and sclerostin (SOST) were reduced in cells treated with tea, regardless of type. At 24- and 48-h postexposure to tea, cell activity was greater in cells receiving any of the teas compared with vehicle control. Supplementation increased mineralization regardless of tea type with both rooibos teas and black tea stimulating greater mineralization than WT, whereas green tea is similar to the others. While future study is needed to confirm in vivo effects, the results suggest that consuming any of the teas studied may benefit bone health.

If you are interested in 3296-90-0, you can contact me at any time and look forward to more communication. Product Details of 3296-90-0.

Chemistry can be defined as the study of matter and the changes it undergoes. You’ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology. 3958-60-9, Name is 1-(Bromomethyl)-2-nitrobenzene, molecular formula is , belongs to bromides-buliding-blocks compound. In a document, author is Ye, Bei, Formula: C7H6BrNO2.

Inhibition of bromate formation by reduced graphene oxide supported cerium dioxide during ozonation of bromide-containing water

Ozone (O-3) is widely used in drinking water disinfection and wastewater treatment. However, when applied to bromide-containing water, ozone induces the formation of bromate, which is carcinogenic. Our previous study found that graphene oxide (GO) can enhance the degradation efficiency of micropollutants during ozonation. However, in this study, GO was found to promote bromate formation during ozonation of bromide-containing waters, with bromate yields from the O-3/GO process more than twice those obtained using ozone alone. The promoted bromate formation was attributed to increased hydroxyl radical production, as confirmed by the significant reduction (almost 75%) in bromate yield after adding t-butanol (TBA). Cerium oxide (less than 5 mg/L) supported on reduced GO (xCeO(2)/RGO) significantly inhibited bromate formation during ozonation compared with reduced GO alone, and the optimal Ce atomic percentage (x) was determined to be 0.36%, achieving an inhibition rate of approximately 73%. Fourier transform infrared (FT-IR) spectra indicated the transformation of GO into RGO after hydrothermal treatment, and transmission electron microscope (TEM) results showed that CeO2 nanoparticles were well dispersed on the RGO surface. The X-ray photoelectron spectroscopy (XPS) spectra results demonstrated that the Ce3+/Ce4+ ratio in xCeO(2)/ RGO was almost 3-4 times higher than that in pure CeO2, which might be attributed to the charge transfer effect from GO to CeO2. Furthermore, Ce3+ on the xCeO(2)/RGO surface could quench Br center dot and BrO center dot to further inhibit bromate formation. Meanwhile, 0.36CeO(2)/RGO could also enhance the degradation efficiency of N,N-diethyl-m-toluamide (DEET) in synthetic and reclaimed water during ozonation.

If you are hungry for even more, make sure to check my other article about 3958-60-9, Formula: C7H6BrNO2.

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. 129316-09-2, Name is 1,3-Dibromo-5-(tert-butyl)benzene, SMILES is CC(C)(C)C1=CC(Br)=CC(Br)=C1, in an article , author is Shaniba, V. S., once mentioned of 129316-09-2, HPLC of Formula: C10H12Br2.

Manilkara zapota (L.) P. Royen Leaf Extract Derived Silver Nanoparticles Induce Apoptosis in Human Colorectal Carcinoma Cells Without Affecting Human Lymphocytes or Erythrocytes

Plant-derived synthesis of silver nanoparticles (AgNPs) has found wide biomedical applications including cancer cure. This report deals with biosynthesis of silver nanoparticles (MZLAgNPs) employing leaf extracts of Manilkara zapota (L.) under optimized conditions. Characterization of MZLAgNPs using UV-Vis spectroscopy, FTIR, XRD, and FESEM analyses revealed that the particles were predominantly spherical averaging 24 nm in size. Their cellular effects were assessed by MTT assay, fluorescence, and scanning electron microscopy of cells stained with propidium iodide, acridine orange/ethidium bromide, and annexin V-FITC to visualize signs of apoptosis. Evaluation of cell proliferation by clonogenic assay, wound healing ability by scratch assay and cell cycle distribution by flow-cytometry was also carried out. Apoptosis-related gene expressions were analyzed by RTq-PCR and western blot analysis. MZLAgNPs selectively inhibited growth of colorectal carcinoma HCT116, HeLa, and non-small lung carcinoma A549 cells, dose-dependently with IC50 concentrations of 8, 16, and 29 mu g/mL respectively, following 72-h treatment, without affecting growth of normal human lymphocytes and erythrocytes. Apoptosis induction was observed by fluorescence and scanning electron microscopy. Overproduction of reactive oxygen species (ROS), reduction of mitochondrial membrane potential, upregulation of apoptotic-related genes – PUMA, cas-3, cas-8, cas-9, and BAX, expression of caspase 3, and occurrence of PARP cleavage were observed in MZLAgNPs/cisplatin treated cells. Taken together, our results clearly demonstrate the therapeutic potential of biogenic MZLAgNPs as an effective agent for killing colorectal carcinoma cells by apoptosis induction.

Interested yet? Read on for other articles about 129316-09-2, you can contact me at any time and look forward to more communication. HPLC of Formula: C10H12Br2.

14660-52-7, Name is Ethyl 5-bromovalerate, molecular formula is C7H13BrO2, belongs to bromides-buliding-blocks compound, is a common compound. In a patnet, author is Niu, Guangliang, once mentioned the new application about 14660-52-7, COA of Formula: C7H13BrO2.

Synthesis of penta-fold twinned Pd-Au-Pd segmental nanorods for in situ monitoring catalytic reaction

Multimetallic nanomaterials have many applications. The controlled synthesis of multimetallic nanomaterials is highly desired. We report a study on using penta-fold twinned (PFT) Au nanorods (NRs) as seeds to synthesize PFT Pd-Au-Pd segmental NRs. The results show that the different crystal structures of seeds, I- and cetyl-trimethylammonium bromide (CTAB) significantly affect the deposition of Pd on seeds surface. The PFT Pd-Au-Pd segmental NRs showed excellent surface-enhanced Raman scattering (SERS) performance and improved catalytic activity. Our research is of great significance for the synthesis of similar nanostructures, and we also shown that PFT Pd-Au-Pd segmental NRs might have potential applications in studying the process of organic reaction.

If you’re interested in learning more about 14660-52-7. The above is the message from the blog manager. COA of Formula: C7H13BrO2.

Reference of 698-00-0, Redox catalysis has been broadly utilized in electrochemical synthesis due to its kinetic advantages over direct electrolysis. The appropriate choice of redox mediator can avoid electrode passivation and overpotential. 698-00-0, Name is 2-Bromo-N,N-dimethylaniline, SMILES is CN(C)C1=CC=CC=C1Br, belongs to bromides-buliding-blocks compound. In a article, author is Sen, Partha Pratim, introduce new discover of the category.

Probing the versatility of metallo-electro hybrid catalysis: enabling access towards facile C-N bond formation

The development of versatile and mild methodologies for C-N bond construction has always been a hot topic of interest in synthetic organic chemistry. In recent years, electrochemistry has emerged as a promising green and sustainable environmentally benign approach to carry out these transformations under mild conditions utilizing electrons as oxidizing/reducing agents. The current state-of-the-art in combining electrocatalysis with transition metal catalysis has gained significant attention. This hybrid synthetic methodology has increasingly become a common tool and offers many potential advantages compared to direct electrolysis. This review comprehensively highlights recent developments in the merging of transition metal catalysis in electro-organic synthesis for the facile construction of C-N bonds. In this review major emphasis is given to mechanistic investigations and their synthetic applications of this hybrid catalysis.

Reference of 698-00-0, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. I hope my blog about 698-00-0 is helpful to your research.

Chemistry is the science of change. But why do chemical reactions take place? Why do chemicals react with each other? The answer is in thermodynamics and kinetics, Application In Synthesis of 3-Bromo-2-methylbenzoic acid, 76006-33-2, Name is 3-Bromo-2-methylbenzoic acid, SMILES is O=C(O)C1=CC=CC(Br)=C1C, belongs to bromides-buliding-blocks compound. In a document, author is Ren, Qing, introduce the new discover.

Quantitative description of surface adsorption of surfactant in aqueous solution without the Gibbs equation

A new equation related to the surface tension and concentration of solute in the surface region is derived and a three-step procedure is proposed to determine the molecular area of surfactants in aqueous solution at saturation of the air-liquid surface. Based on their surface tension data, the molecular areas of hexyl, octyl and decyl trimethylammonium bromide (HTABr, OTABr and DTABr) in aqueous solutions have been calculated and are in agreement with the computational results of density functional theory. Gibbs analysis has also been carried out for these surfactants. As the surface tension data are fitted with the Gibbs equation, it is found that there exist two line segments for both OTABr and DTABr, which lead to two molecular areas for each of them. This arbitrariness indicates that no unique molecular area could be obtained for OTABr and DTABr. As for HTABr, its molecular area obtained with Gibbs analysis is out of the range estimated with density functional theory. These results show the failure of the Gibbs equation.

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 76006-33-2 is helpful to your research. Application In Synthesis of 3-Bromo-2-methylbenzoic acid.