Month: April 2021

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, Recommanded Product: 4-Iodobenzotrifluoride, 455-13-0, Name is 4-Iodobenzotrifluoride, SMILES is C1=C(C(F)(F)F)C=CC(=C1)I, belongs to iodides-buliding-blocks compound. In a document, author is Parkinson, Lily, introduce the new discover.

COMPARISON OF TWO IODINE QUANTIFICATION METHODS IN AN ARTIFICIAL SEAWATER SYSTEM HOUSING WHITE-SPOTTED BAMBOO SHARKS (CHILOSCYLLIUM PLAGIOSUM)

Iodine is an essential micronutrient for elasmobranchs in order to prevent goiter. Preventing goiter requires bioavailable iodide: either oral iodide or maintaining adequate aquarium water iodide concentrations. The objective of this study was to determine how oral and water supplementation affected iodine (I-2) and iodide (I) concentrations in artificial seawater aquaria housing captive white-spotted bamboo sharks (Chiloscyl hum plagiosum). Daily water samples were collected and free iodine (I-2) was determined using ultraviolet-absorbance spectrophotometry (a relatively simple in-house assay) and total iodide (I) via liquid chromatography (a more time- and expertise-intense quantification method) to learn the effects of supplementation. One water system received iodine and iodide supplementation in the form of 5% Lugol’s iodine solution added directly to the water, while a second water system received no supplementation. In addition, one tank of sharks in each water system received oral iodide supplementation. Results indicated that oral supplementation provides greater increases in water concentrations of bioavailable iodide (I) than direct water supplementation. In addition, the chromatographic results suggested that iodide is present in higher concentrations in the systems not receiving water supplementation. Increased iodide concentrations were detected in water samples after water changes and after oral iodide supplementation was administered, but total iodine (I-2) concentration changes were not detectable within the same time frame.

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 455-13-0 is helpful to your research. Recommanded Product: 4-Iodobenzotrifluoride.

Synthetic Route of 19094-56-5, 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. 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 Ishiwata, K, introduce new discover of the category.

Automated synthesis of radiochemically pure C-11-labeled ethyl, propyl and butyl iodides

Carbon-11 labeled alkyl iodides such as ethyl. propyl and butyl iodides are useful precursors for labeling various tracers for positron emission tomography. In the standard preparing process, which consists of the reaction of Grignard reagents with (CO2)-C-11 followed by reduction with lithium aluminum hydride and reaction with HI. the produced C-11-alkyl iodides were applied onto gas chromatography using chromosorb W-HP with 10% OV101 as the liquid phase. to give radiochemically pure C-11-ethyl, C-11-propyl or C-11-butyl iodide without a concomitant byproduct, i.e. C-11-methyl iodide. The automated production system was described. (C) 1999 Elsevier Science Ltd. All rights reserved.

Synthetic Route of 19094-56-5, 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 19094-56-5.

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. 2043-57-4, Name is 1,1,1,2,2,3,3,4,4,5,5,6,6-Tridecafluoro-8-iodooctane, molecular formula is , belongs to iodides-buliding-blocks compound. In a document, author is MONKS, CD, Quality Control of 1,1,1,2,2,3,3,4,4,5,5,6,6-Tridecafluoro-8-iodooctane.

DETERMINATION OF IODIDE-ION IN IMPREGNATED CHARCOALS BY FLOW-INJECTION

A procedure for the determination of iodide in charcoals impregnated with potassium iodide is described. An aqueous extract is prepared and the iodide ion concentration in this extract (up to 4 x 10(-3) Mol dm-3) is determined by injection into a water stream that is merged with an aqueous solution containing potassium iodate and sulfuric acid, followed by absorptiometric measurement at 460 nm. The analysis is simple and rapid, with a limit of detection of 6 x 10(-5) mol dm-3 iodide and a relative standard deviation (n = 10) of 1.2% for 1 X 10-3 mol dm-3 iodide. The procedure was used to measure the levels and the distribution of potassium iodide in impregnated charcoals. The flow method is discussed with reference to the chemistry of elementary iodine in aqueous solution.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 2043-57-4, in my other articles. Quality Control of 1,1,1,2,2,3,3,4,4,5,5,6,6-Tridecafluoro-8-iodooctane.

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. 507-63-1, Name is Heptadecafluoro-1-iodooctane, molecular formula is C8F17I. In an article, author is Masuyama, Yoshiro,once mentioned of 507-63-1, SDS of cas: 507-63-1.

Aldol reactions of alpha-bromoalkyl phenyl ketones and aldehydes with Tin(IV) iodide and tetrabutylammonium iodide

Aldol reactions of alpha-bromoacetophenone and aldehydes in dichloromethane produced the corresponding E-alpha,beta-unsaturated ketones at 25 degrees C with one equimolar amount of tin(IV) iodide, one equimolar amount of tetrabutylammonium iodide and one equimolar amount of N,N-diisopropylethylamine, and produced the corresponding beta-hydroxy ketones at -80 degrees C with one equimolar amount of tin(IV) iodide and two equimolar amounts of tetrabutylammonium iodide. Using one equimolar amount of tin(IV) iodide and two equimolar amounts of tetrabutylammonium iodide at -80 degrees C in dichloromethane, alpha-bromopropiophenone reacted with aldehydes to afford the corresponding syn-alpha-methyl-beta-hydroxy ketones selectively.

Interested yet? Keep reading other articles of 507-63-1, you can contact me at any time and look forward to more communication. SDS of cas: 507-63-1.

Synthetic Route of 610-97-9, 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. 610-97-9, Name is Methyl 2-iodobenzoate, SMILES is O=C(OC)C1=CC=CC=C1I, belongs to iodides-buliding-blocks compound. In a article, author is Huang, XT, introduce new discover of the category.

The reactions of beta-fluoroalkyl vinyl iodides with aryl thiolate ions

In CH3CN, fluoroalkyl vinyl iodides react with aryl thiolate ions to give the iodine – substituted products via an elimination – addition mechanism. However, treatment of fluoroalkyl vinyl iodides with alkoxide or alkyl thiolate ions affords only fluoroalkyl alkynes through a simple elimination process.

Synthetic Route of 610-97-9, 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 610-97-9.

Chemistry, like all the natural sciences, Recommanded Product: 4-Iodobenzonitrile, begins with the direct observation of nature¡ª in this case, of matter.3058-39-7, Name is 4-Iodobenzonitrile, SMILES is N#CC1=CC=C(I)C=C1, belongs to iodides-buliding-blocks compound. In a document, author is Gogonas, EP, introduce the new discover.

The reaction of phenyliodonium bis(phenylsulfonyl)methylide with alkyl iodide

The reactions of a beta-disulfonyl iodonium ylide with alkyl iodides provided functionalized iodides via the intermediacy of unstable alkyliodonium ylides.

Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions. you can also check out more blogs about 3058-39-7. Recommanded Product: 4-Iodobenzonitrile.

Chemistry is the experimental science by definition. We want to make observations to prove hypothesis. For this purpose, we perform experiments in the lab. , Safety of 2-Iodoacetamide, 144-48-9, Name is 2-Iodoacetamide, molecular formula is C2H4INO, belongs to iodides-buliding-blocks compound. In a document, author is Agretti, P., introduce the new discover.

Study of potential inhibitors of thyroid iodide uptake by using CHO cells stably expressing the human sodium/iodide symporter (hNIS) protein

Background: Thyroid gland is highly dependent on dietary intake of iodine for normal function, so it is particularly subjected to endocrine disruptor action. The human sodium/iodide symporter (hNIS) is an integral plasma membrane glycoprotein mediating the active transport of iodide into thyroid follicular cells, a crucial step for thyroid hormone biosynthesis. Beyond to perchlorate and thyocianate ions a few other inhibitors of iodide uptake have been described. Aim: The aim of this study was to investigate if 10 substances usually used as drugs in clinical practice were able to inhibit NIS-mediated iodide uptake in vitro. Materials and methods: A CHO cell line stably expressing hNIS was used test any inhibition of NIS-mediated iodide uptake exerted by drugs. Perchlorate and thyocianate ions were used as positive controls. Results: None of the analyzed substances was able to significantly inhibit iodide uptake in our system. As we expected, perchlorate and thyocianate ions were able to inhibit iodide uptake in a dose-dependent manner. Conclusions: In conclusion, we carried out an in vitro assay to evaluate the potential inhibitory effect of common drugs on NIS-mediated iodide uptake by using CHO-hNIS cells. None of the analyzed substances was able to inhibit iodide uptake; only perchlorate and thyocianate were able to inhibit iodide uptake in a dose-dependent manner. (J. Endocrinol. Invest. 34:107-174, 2011) (C) 2011, Editrice Kurtis

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 144-48-9. Safety of 2-Iodoacetamide.

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. 619-58-9, Name is 4-Iodobenzoic acid, SMILES is O=C(O)C1=CC=C(I)C=C1, in an article , author is Smit, JWA, once mentioned of 619-58-9, Category: iodides-buliding-blocks.

Expression of the human sodium/iodide symporter (hNIS) in xenotransplanted human thyroid carcinoma

The uptake of iodide in thyroid epithelial cells is mediated by the sodium/iodide symporter (NIS). The uptake of iodide is of vital importance for thyroid physiology and is a prerequisite for radioiodine therapy in thyroid cancer. Loss of iodide uptake due to diminished expression of the human NIS (hNIS) is frequently observed in metastasized thyroid cancer. So far, no animal model for the study of radioiodine therapy in thyroid cancer has been available. Strategies to restore iodide uptake in thyroid cancer include the exploration of hNIS gene transfer into hNIS defective thyroid cancer. We have performed a stable transfection of hNIS into the hNIS defective follicular thyroid carcinoma cell line FTC133. Stabily transfected colonies exhibited high uptake of (NaI)-I-125, which could be blocked completely with sodiumperchlorate. hNIS transfected FTC133 and non-transfected cell lines injected subcutaneously in nude mice formed tumors after 6 weeks. Iodide uptake in the hNIS transfected tumor was much higher than in non-transfected tumor, but a rapid release of radioactivity from the hNIS transfected tumor was observed. Further studies are necessary to investigate the role of hNIS in relation to other thyroid specific proteins in iodide metabolism in thyroid cancer.

Interested yet? Read on for other articles about 619-58-9, you can contact me at any time and look forward to more communication. Category: iodides-buliding-blocks.

Electric Literature of 144-48-9, The transformation of simple hydrocarbons into more complex and valuable products via catalytic C¨CH bond functionalisation has revolutionised modern synthetic chemistry. 144-48-9, Name is 2-Iodoacetamide, SMILES is NC(=O)CI, belongs to iodides-buliding-blocks compound. In a article, author is DURAND, PB, introduce new discover of the category.

DIIODOTETRA(PYRIDINE-N)COPPER(II)ZINC(II) DIPYRIDINE

The combination of Cu-I iodide and Zn-II iodide in pyridine results in a mixed metal (Cu,Zn) pyridine iodide complex which is unlike the complexes formed by zinc(II), copper(I) or copper(II) with pyridine and iodide ions. The title compound, [Cu0.92Zn0.08I2(C5H5N)4].2C(5)H(5)N, crystallizes in the orthorhombic space group Ccca, with a square-planar arrangement of pyridine N atoms about the metal site and I atoms 3.460(5) Angstrom removed in axial positions.

Electric Literature of 144-48-9, 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 144-48-9.

In an article, author is SANAD, SH, once mentioned the application of 144-48-9, HPLC of Formula: C2H4INO, Name is 2-Iodoacetamide, molecular formula is C2H4INO, molecular weight is 184.9637, MDL number is MFCD00008028, category is iodides-buliding-blocks. Now introduce a scientific discovery about this category.

INHIBITION EFFECT OF POTASSIUM-IODIDE ON CORROSION OF STAINLESS-STEEL IN HYDROCHLORIC-ACID SOLUTION

The inhibition effect of potassium iodide on the corrosion of stainless steel has been examined using weight loss and electrochemical measurements. Potassium iodide was found to be an excellent inhibitor for stainless steel types 316, 430 and 440 (efficiency more than 95%), and moderate for type 304. The corrosion rates in 1 M HCl and in presence of potassium iodide fit an Arrhenius equation. The presence of potassium iodide lowered both the activation energy and the rate of reaction. Polarization measurements indicated that potassium iodide acts as an anodic inhibitor particularly at higher concentrations and as a cathodic inhibitor at lower concentrations. The synergistic effect of potassium iodide on the inhibitive efficiency of the organic substances was studied.

If you are interested in 144-48-9, you can contact me at any time and look forward to more communication. HPLC of Formula: C2H4INO.