Category: 60166-93-0

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, 60166-93-0, Name is Iopamidol, SMILES is O=C(C1=C(I)C(NC([C@@H](O)C)=O)=C(I)C(C(NC(CO)CO)=O)=C1I)NC(CO)CO, in an article , author is Berdonosov, SS, once mentioned of 60166-93-0, COA of Formula: C17H22I3N3O8.

Interaction of cesium iodide with an air flow at high temperatures

The behavior of cesium iodide labeled with I-131 in an air flow at 630-660 and 1200-1250 degrees C was studied. At the melting point of polycrystalline CsI only insignificant amount of iodide ion is oxidized to free iodine, whereas at 1200-1250 degrees C nearly 1-2 wt % of the initial iodide is converted into free iodine in 10 min and only several hundredths of percent of the initial iodide is oxidized to iodate ions.

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Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 60166-93-0, Name is Iopamidol, SMILES is O=C(C1=C(I)C(NC([C@@H](O)C)=O)=C(I)C(C(NC(CO)CO)=O)=C1I)NC(CO)CO, belongs to iodides-buliding-blocks compound. In a document, author is Berkowitz, WF, introduce the new discover, Application In Synthesis of Iopamidol.

Copper-catalyzed cross-coupling of alkylsamarium reagents with alkyl halides

SmI2/HMPA converts alkyl iodides and bromides to alkyl samarium reagents which can be cross-coupled with primary alkyl iodides and bromides and secondary iodides in the presence of Cu(I) halides or Li2CuCl4 at room temperature. The alkylation of primary iodides gives good yields of cross-coupling products with negligible homo-coupling products. The method is especially useful for the small scale cross-coupling reactions. (C) 1997 Elsevier Science Ltd.

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 60166-93-0 is helpful to your research. Application In Synthesis of Iopamidol.

Let¡¯s face it, organic chemistry can seem difficult to learn. Especially from a beginner¡¯s point of view. Like 60166-93-0, Name is Iopamidol. In a document, author is Voronkov, M. G., introducing its new discovery. HPLC of Formula: C17H22I3N3O8.

Acyl iodides in organic synthesis: XIII. Reaction of acyl iodides with nitrogen-containing heteroaromatic compounds

Reactions of acetyl iodide with pyridine at room temperature and with quinoline both at 20-25A degrees C and on cooling to -50A degrees C involve dehydrohalogenation of acetyl iodide with formation of ketene and pyridinium or quinolinium iodides. The reaction of acetyl iodide with pyridine at -5 to -50A degrees C led to the formation of N-acetylpyridinium iodide. Benzoyl iodide reacted with both pyridine and quinoline at both -50A degrees C and at 20-25A degrees C to form stable N-benzoylpyridinium and N-benzoylquinolinium iodides. The reaction of pyrrole with acetyl iodide under analogous conditions was accompanied by polymerization.

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60166-93-0, Name is Iopamidol, molecular formula is C17H22I3N3O8, belongs to iodides-buliding-blocks compound, is a common compound. In a patnet, author is VANBOGGELEN, MP, once mentioned the new application about 60166-93-0, COA of Formula: C17H22I3N3O8.

SYNTHESIS OF ALPHA,BETA-UNSATURATED ALDEHYDES FROM THE FRAGMENTATION OF ISOXAZOLIDINES WITH METHYL-IODIDE

Isoxazolidines when treated with methyl iodide in THF, under reflux readily afford a,P-unsaturated aldehydes and quaternary ammonium iodide alcohols.

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The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. COA of Formula: C17H22I3N3O8, 60166-93-0, Name is Iopamidol, SMILES is O=C(C1=C(I)C(NC([C@@H](O)C)=O)=C(I)C(C(NC(CO)CO)=O)=C1I)NC(CO)CO, in an article , author is Corvilain, B, once mentioned of 60166-93-0.

Stimulation by iodide of H2O2 generation in thyroid slices from several species

The regulation of thyroid metabolism by iodide involves numerous inhibitory effects. However, in unstimulated dog thyroid slices, a small inconstant stimulatory effect of iodide on H2O2 generation is observed. The only other stimulatory effect reported with iodide is on [1-C-14]glucose oxidation, i.e., on the pentose phosphate pathway. Because we have recently demonstrated that the pentose phosphate pathway is controlled by H2O2 generation, we study here the effect of iodide on basal H2O2 generation in thyroid slices from several species. Our data show that in sheep, pig, bovine, and to a lesser extent dog thyroid, iodide had a stimulatory effect on H2O2 generation. In horse and human thyroid, an inconstant effect was observed. We demonstrate in dogs that the stimulatory effect of iodide is greater in thyroids deprived of iodide, raising the possibility that differences in thyroid iodide pool may account, at least in part, for the differences between the different species studied. This represents the first demonstration of an activation by iodide of a specialized thyroid function. In comparison with conditions in which an inhibitory effect of iodide on H2O2 generation is observed, the stimulating effect was observed for lower concentrations and for a shorter incubation time with iodide. Such a dual control of H2O2 generation by iodide has the physiological interest of promoting an efficient oxidation of iodide when the substrate is provided to a deficient gland and of avoiding excessive oxidation of iodide and thus synthesis of thyroid hormones when it is in excess. The activation of H2O2 generation may also explain the well described toxic effect of acute administration of iodide on iodine-depleted thyroids.

But sometimes, even after several years of basic chemistry education, it is not easy to form a clear picture on how they govern reactivity! 60166-93-0, you can contact me at any time and look forward to more communication. COA of Formula: C17H22I3N3O8.

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 60166-93-0, Name is Iopamidol, molecular formula is C17H22I3N3O8. In an article, author is Tsai, Wen-Ting,once mentioned of 60166-93-0, HPLC of Formula: C17H22I3N3O8.

Microwave-Assisted Copper-Catalyzed Cross-Coupling Reaction of Alkynes with Aryl Iodides and Vinyl Halides

The microwave-assisted, copper-catalyzed coupling of terminal alkynes with aryl iodides and vinyl halides is reported. In general, the reactions are completed in 10-30 min using 2-5 mol% [CuI(xantphos)] as a catalyst to provide the corresponding alkynes and enynes in good to excellent yields. A broad spectrum of aryl iodides, vinyl iodides, and bromides are coupled with aryl- and alkyl alkynes.

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The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. Recommanded Product: 60166-93-0, 60166-93-0, Name is Iopamidol, SMILES is O=C(C1=C(I)C(NC([C@@H](O)C)=O)=C(I)C(C(NC(CO)CO)=O)=C1I)NC(CO)CO, in an article , author is Smit, JWA, once mentioned of 60166-93-0.

Iodide kinetics and experimental I-131 therapy in a xenotransplanted human sodium-iodide symporter-transfected human follicular thyroid carcinoma cell line

Uptake of iodide is a prerequisite for radioiodide therapy in thyroid cancer. However, loss of iodide uptake is frequently observed in metastasized thyroid cancer, which may be explained by diminished expression of the human sodium-iodide symporter (hNIS). We studied whether transfection of hNIS into the hNIS-deficient follicular thyroid carcinoma cell line FTC133 restores the in vivo iodide accumulation in xenografted tumors and their susceptibility to radioiodide therapy. In addition, the effects of low-iodide diets and thyroid ablation on iodide kinetics were investigated. Tumors were established in nude mice injected with the hNIS-transfected cell line FTC133-NIS30 and the empty vector transfected cell line FTC133-V4 as a control. Tumors derived from FTC133-NIS30 in mice on a normal diet revealed a high peak iodide accumulation (17.4% of administered activity, measured with an external probe) as compared with FTC133-V4 (4.6%). Halflife in FTC133-NIS30 tumors was 3.8 h. In mice kept on a low-iodide diet, peak activity in FTC133-NIS30 tumors was diminished (8.1%), whereas thyroid iodide accumulation was increased. In thyroid-ablated mice kept on a low-iodide diet, half-life of radioiodide was increased considerably (26.3 h), leading to a much higher area under the time-radioactivity curve than in FTC133-NIS30 tumors in mice on a normal diet without thyroid ablation. Experimental radioiodide therapy with 2 mCi (74 MBq) in thyroid-ablated nude mice, kept on a low-iodide diet, postponed tumor development (4 wk after therapy, one of seven animals revealed tumor vs. five of six animals without therapy). However, 9 wk after therapy, tumors had developed in four of the seven animals. The calculated tumor dose was 32.2 Gy. We conclude that hNIS transfection into a hNIS-defective thyroid carcinoma cell line restores the in vivo iodide accumulation. The unfavorable iodide kinetic characteristics (short half-life) can be partially improved by conventional conditioning with thyroid ablation and low-iodide diet, leading to postponed tumor development after radioiodide therapy. However, to achieve sufficient radioiodide tumor doses for therapy, further strategies are necessary, aiming at the mechanisms of iodide efflux in particular.

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Electric Literature of 60166-93-0, 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. 60166-93-0, Name is Iopamidol, SMILES is O=C(C1=C(I)C(NC([C@@H](O)C)=O)=C(I)C(C(NC(CO)CO)=O)=C1I)NC(CO)CO, belongs to iodides-buliding-blocks compound. In a article, author is LU, GH, introduce new discover of the category.

ANODIC-STRIPPING VOLTAMMETRY FOR THE DETERMINATION OF TRACE IODIDE

A carbon paste electrode is used for stripping voltammetry of trace iodide in a Britton-Robinson (B-R) buffer containing cetyltrimethyl ammonium bromide (CTMAB). The electrochemical behavior of I(2)BrR is described. In a solution containing 0.1 mu g/mL iodide, the relative standard deviation for ten determinations is 3.3%, the peak height also varies linearly with the concentration of iodide over the range 0.05-0.25 mu g/mL, and the detection limit is 0.03 mu g/mL. This method has been used for the determination of iodide in table salt samples with 88-104% recovery.

Electric Literature of 60166-93-0, 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 60166-93-0.

Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 60166-93-0, Name is Iopamidol, molecular formula is C17H22I3N3O8, belongs to iodides-buliding-blocks compound. In a document, author is Ponpon, J. P., introduce the new discover, Category: iodides-buliding-blocks.

Etching of mercuric iodide in cation iodide solutions

The surface properties of mercuric iodide after etching in various cation iodide solutions have been investigated in terms of dissolution rate, morphology, electrical properties and reaction with water vapour. No significant differences have been observed in the etching rates. However, dissolution of HgI2 in NH4I, NaI, KI or RbI leaves the surface more or less covered with a residual iodo mercurate compound whose electrical properties and stability with regard to humidity may noticeably influence the behaviour of mercuric iodide devices. The smallest effect has been observed for etching in NaI. (c) 2005 Elsevier B.V. All rights reserved.

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 60166-93-0. Category: iodides-buliding-blocks.

Chemistry, like all the natural sciences, begins with the direct observation of nature¡ª in this case, of matter.60166-93-0, Name is Iopamidol, SMILES is O=C(C1=C(I)C(NC([C@@H](O)C)=O)=C(I)C(C(NC(CO)CO)=O)=C1I)NC(CO)CO, belongs to iodides-buliding-blocks compound. In a document, author is Keyvanfard, Mohsen, introduce the new discover, Product Details of 60166-93-0.

Kinetic catalytic-spectrophotometric determination of race amount of iodide

A new, simple, sensitive and selective catalytic spectrophotometric method was developed for the determination of ultra trace amounts of iodide. The method is based on the catalytic effect of iodide on the oxidation of Indigo carmin by iodate. The reaction was monitored spectrophotometrically by measuring the decrease in absorbance of Indigo carmin at 612 nm with a fixed-time method. The decrease in the absorbance of Indigo carmin is proportional to the concentration of iodide in concentration range 40.0-200.0 ng/ mL,with a fixed time of 0.5-2.5 min from initiation of the reaction. The limit of detection is 34 ng/mL iodide.The relative standard deviation of 0.060 and 0.10 mu g/mL iodide was 1.8 and 2.2%, respectively. The method was applied to the determination of iodide in water.

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 60166-93-0 is helpful to your research. Product Details of 60166-93-0.