Category: iodides-buliding-blocks

Chemistry is the experimental science by definition. We want to make observations to prove hypothesis. For this purpose, we perform experiments in the lab. , Category: iodides-buliding-blocks, 610-97-9, Name is Methyl 2-iodobenzoate, molecular formula is C8H7IO2, belongs to iodides-buliding-blocks compound. In a document, author is Pesce, Liuska, introduce the new discover.

TSH Regulates Pendrin Membrane Abundance and Enhances Iodide Efflux in Thyroid Cells

Thyroid hormones are essential for normal development and metabolism. Their synthesis requires transport of iodide into thyroid follicles. The mechanisms involving the apical efflux of iodide into the follicular lumen are poorly elucidated. The discovery of mutations in the SLC26A4 gene in patients with Pendred syndrome (congenital deafness, goiter, and defective iodide organification) suggested a possible role for the encoded protein, pendrin, as an apical iodide transporter. We determined whether TSH regulates pendrin abundance at the plasma membrane and whether this influences iodide efflux. Results of immunoblot and immunofluorescence experiments reveal that TSH and forskolin rapidly increase pendrin abundance at the plasma membrane through the protein kinase A pathway in PCCL-3 rat thyroid cells. The increase in pendrin membrane abundance correlates with a decrease in intracellular iodide as determined by measuring intracellular (125)iodide and can be inhibited by specific blocking of pendrin. Elimination of the putative protein kinase A phosphorylation site T717A results in a diminished translocation to the membrane in response to forskolin. These results demonstrate that pendrin translocates to the membrane in response to TSH and suggest that it may have a physiological role in apical iodide transport and thyroid hormone synthesis. (Endocrinology 153: 512-521, 2012)

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 610-97-9. Category: iodides-buliding-blocks.

Reference of 19094-56-5, The transformation of simple hydrocarbons into more complex and valuable products via catalytic C¨CH bond functionalisation has revolutionised modern synthetic chemistry. 19094-56-5, Name is 2-Chloro-5-iodobenzoic acid, SMILES is O=C(O)C1=CC(I)=CC=C1Cl, belongs to iodides-buliding-blocks compound. In a article, author is Liu, Xiangnan, introduce new discover of the category.

Ultrasensitive iodide detection based on the resonance light scattering of histidine-stabilized gold nanoclusters

We have developed a novel resonance light scattering (RLS) assay for the sensitive and selective determination of iodide. It is based on the use of histidine-stabilized gold nanoclusters (His-AuNCs) which undergo fusion and aggregation in the presence of iodide. The resulting enhancement in the intensity of RLS is proportional to the concentration of iodide in the 0.01 to 8.0 mu M range, and the detection limit is as low as 1.8 nM at a signal-to-noise ratio of 3. This turn-on method is highly selective for iodide and not interfered by other ions commonly present. It was applied to the determination of iodide in (spiked) real water samples.

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Let¡¯s face it, organic chemistry can seem difficult to learn. Especially from a beginner¡¯s point of view. Like 450412-29-0, Name is 1-Bromo-3-fluoro-2-iodobenzene. In a document, author is Chen, JG, introducing its new discovery. Name: 1-Bromo-3-fluoro-2-iodobenzene.

A convenient synthesis of fluoroalkyl ketones and sulfones from perfluoroisopropyl iodide

In the presence of hexaethylphosphorus triamide (HEPT), perfuoroisopropyl iodide is reacted directly with perfluoroalkyl acid halides, trifluoromethanesulfonyl fluoride, and methanesulfonyl chloride ir benzonitrile to give the corresponding fluorinated ketones and sulfones. Diglyme is the solvent of choice for the reaction of pentafluorobenzoyl chloride with perfluoroisopropyl iodide in the presence of HEPT. (C) 1998 Elsevier Science S.A.

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Chemistry, like all the natural sciences, Quality Control of 2-Iodobenzoic acid, begins with the direct observation of nature¡ª in this case, of matter.88-67-5, Name is 2-Iodobenzoic acid, SMILES is O=C(O)C1=CC=CC=C1I, belongs to iodides-buliding-blocks compound. In a document, author is Liao, LF, introduce the new discover.

Determination of nitrotyrosine with catalytic spectriophotometry combining the substitution of nitroxyl by iodide

The nitroxyl of nitrotyrosine can be substituted quantitatively by iodide when the nitroxyl is reduced to amino and then diazotized to diazonium. The iodide can be dertermined by catalytic spectrophotometric method with iodide-nitrous acid-arsenious acid system. Thus, a new catalytic spectrophotometric method combining the substitution of nitroxyl by iodide ford the determination of nitrotyrosine has been established. The limit of detection is 0.002 mumol.L-1 and the linear range is 0.005-0.25 mumol.L-1. The method has been used for the determination of nitrotyrosine in the-products of the reaction of tyrosine with peroxynitrite and the results are satisfactory.

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450412-29-0, Name is 1-Bromo-3-fluoro-2-iodobenzene, molecular formula is C6H3BrFI, belongs to iodides-buliding-blocks compound, is a common compound. In a patnet, author is Yavari, Issa, once mentioned the new application about 450412-29-0, Quality Control of 1-Bromo-3-fluoro-2-iodobenzene.

Copper(I) Iodide Catalyzed Formation of Aryl Hydrazides from a Mitsunobo Reagent and Aryl Halides

The Mitsonubo reagent (triphenylphosphine and dialkyl azodicarboxylates) was employed as a potential anionic nucleophile in a reaction involving aryl halides to produce aryl hydrazides. Aryl iodides and bromides, with electron-withdrawing as well as electron-releasing groups on the aromatic ring, undergo coupling reactions in good yields. The optimized conditions are developed for aryl iodides at room temperature and for aryl bromides at 60-75 degrees C.

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Related Products of 619-58-9, The transformation of simple hydrocarbons into more complex and valuable products via catalytic C¨CH bond functionalisation has revolutionised modern synthetic chemistry. 619-58-9, Name is 4-Iodobenzoic acid, SMILES is O=C(O)C1=CC=C(I)C=C1, belongs to iodides-buliding-blocks compound. In a article, author is Li, Chia-Cheng, introduce new discover of the category.

Conserved charged amino acid residues in the extracellular region of sodium/iodide symporter are critical for iodide transport activity

Background: Sodium/iodide symporter (NIS) mediates the active transport and accumulation of iodide from the blood into the thyroid gland. His-226 located in the extracellular region of NIS has been demonstrated to be critical for iodide transport in our previous study. The conserved charged amino acid residues in the extracellular region of NIS were therefore characterized in this study. Methods: Fourteen charged residues (Arg-9, Glu-79, Arg-82, Lys-86, Asp-163, His-226, Arg-228, Asp-233, Asp-237, Arg-239, Arg-241, Asp-311, Asp-322, and Asp-331) were replaced by alanine. Iodide uptake abilities of mutants were evaluated by steady-state and kinetic analysis. The three-dimensional comparative protein structure of NIS was further modeled using sodium/glucose transporter as the reference protein. Results: All the NIS mutants were expressed normally in the cells and targeted correctly to the plasma membrane. However, these mutants, except R9A, displayed severe defects on the iodide uptake. Further kinetic analysis revealed that mutations at conserved positively charged amino acid residues in the extracellular region of NIS led to decrease NIS-mediated iodide uptake activity by reducing the maximal rate of iodide transport, while mutations at conserved negatively charged residues led to decrease iodide transport by increasing dissociation between NIS mutants and iodide. Conclusions: This is the first report characterizing thoroughly the functional significance of conserved charged amino acid residues in the extracellular region of NIS. Our data suggested that conserved charged amino acid residues, except Arg-9, in the extracellular region of NIS were critical for iodide transport.

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Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels. 507-63-1, Name is Heptadecafluoro-1-iodooctane, molecular formula is C8F17I. In an article, author is Moren, Mari,once mentioned of 507-63-1, Recommanded Product: 507-63-1.

Uptake of iodide from water in Atlantic halibut larvae (Hippoglossus hippoglossus L.)

The natural diet of marine fish larvae, copepods, contain 60-350 mg I kg(-1), while live feed used in commercial hatcheries have iodine concentrations in the range of 1 mg kg(-1). Seawater is also considered to be an important source of iodine for marine fish. The question asked in this study is whether Atlantic halibut larvae are capable of absorbing iodide from the water and if so, can the seawater sustain the iodine requirement during larval development and metamorphosis. Levels of iodide and iodate in seawater samples from four different rearing facilities were analysed. All samples contained relative low levels of iodide (0-22 nM) and except for samples from one site; the levels of iodide and iodate were in agreement with previously published data. The uptake of iodide from seawater was measured by incubating Atlantic halibut larvae in water with a constant level of radioactive iodide (I-125(-)) and increasing levels of cold iodide (I-127(-)). To evaluate whether the uptake of iodide would change during metamorphosis, three different developmental stages (pre metamorphic, metamorphic and post metamorphic) were examined. The uptake was similar for all three stages, increasing with increasing concentration of iodide in the water. The highest level of iodide used was 2000 nM,100 times higher than what was measured in the seawater samples. The uptake curves did not seem to reach equilibrium. This may be due to a constant nonspecific uptake or that the equilibrium level is higher than 2000 nM. The uptake was partly blocked by perchlorate (ClO3-) which is a known inhibitor of the sodium iodide symporter. This indicates that the Atlantic halibut larvae accumulate iodide through both specific and non-specific uptake pathways. (C) 2008 Elsevier B.V. All rights reserved.

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Reference of 76801-93-9, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 76801-93-9, Name is 5-Amino-N1,N3-bis(2,3-dihydroxypropyl)-2,4,6-triiodoisophthalamide, SMILES is O=C(NCC(O)CO)C1=C(I)C(N)=C(I)C(C(NCC(O)CO)=O)=C1I, belongs to iodides-buliding-blocks compound. In a article, author is Maury, Julien, introduce new discover of the category.

Unexpected conversion of alkyl azides to alkyl iodides and of aryl azides to N-tert-butyl anilines

In the presence of ten-butyl iodide, alkyl azides are converted into the corresponding iodides at room temperature, whereas, N-t-Bu anilines are obtained from aryl azides under the same experimental conditions. A mechanism is proposed to explain this unusual reactivity. (c) 2012 Elsevier Ltd. All rights reserved.

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Reactions catalyzed within inorganic and organic materials and at electrochemical interfaces commonly occur at high coverage and in condensed media, causing turnover rates to depend strongly on interfacial structure and composition, 19094-56-5, Name is 2-Chloro-5-iodobenzoic acid, SMILES is O=C(O)C1=CC(I)=CC=C1Cl, in an article , author is Kamal, A, once mentioned of 19094-56-5, Application In Synthesis of 2-Chloro-5-iodobenzoic acid.

New halogenation reagent system for one-pot conversion of alcohols into iodides and azides

In situ generation of hydrogen iodide from methane-sulphonic acid/sodium iodide in different solvents was found to be an attractive reagent system for the chemoselective conversion of various alcohols to their corresponding iodides. Moreover, treatment of benzylic and allylic alcohols with this reagent system, followed by substitution with azide ion, produced the corresponding azides in one pot in good yields.

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Electric Literature of 144-48-9, 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. 144-48-9, Name is 2-Iodoacetamide, SMILES is NC(=O)CI, belongs to iodides-buliding-blocks compound. In a article, author is Hosseinzadeh, R, introduce new discover of the category.

Copper-catalyzed amidation of aryl iodides using KF/Al2O3: An improved protocol

A mild method for the copper-catalyzed amidation of aryl iodides is reported. This simple C-N bond forming procedure shows that the combination of air stable Cut and 1, 10-phenanthroline in the presence of KF/Al2O3 comprises an extremely efficient and general catalyst system for the N-amidation of aryl iodides. Different functionalized aryl iodides were efficiently coupled with amides using this method.

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