Tag: M.W=500-600

Application of 507-63-1, Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, 507-63-1, Name is Heptadecafluoro-1-iodooctane, SMILES is IC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F, belongs to iodides-buliding-blocks compound. In a article, author is Pregliasco, L, introduce new discover of the category.

Effects of iodide on thyroglobulin biosynthesis in FRTL-5 cells

Iodide inhibits several thyroid parameters through an organic intermediate, and this process has been related to thyroid autoregulation. The aim of this study was to determine the effect of iodine on thyroglobulin (Tg) synthesis in the rat thyroid cell line FRTL-5. TSH stimulated amino acid incorporation into the cells by 400% and iodine had no effect on this parameter. No effect of TSH or iodide on [S-35]methionine incorporation into protein was found under our experimental conditions (similar to 80% of total [S-35]methionine incorporated was found in TCA-precipitable material). TSH caused an increase in Tg synthesis, after 1 h, while iodide partially blocked the effect of TSH (controls 6.4% of TCA precipitable radioactivity; TSH 10.7%; iodide 8.4%). After 24 h, the protein released into the medium was measured. TSH stimulated total protein liberation and iodide inhibited this parameter. TSH stimulated total RNA content, and iodide caused an inhibition. Northern analysis did not show inhibition by iodide of TSH-stimulated Tg mRNA levels. The present results show an inhibitory effect of excess iodide on TSH-stimulated thyroglobulin biosynthesis in FRTL-5 cells.

Application of 507-63-1, 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 507-63-1.

Reference of 507-63-1, Catalysts allow a reaction to proceed via a pathway that has a lower activation energy than the uncatalyzed reaction. 507-63-1, Name is Heptadecafluoro-1-iodooctane, SMILES is IC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F, belongs to iodides-buliding-blocks compound. In a article, author is Khan, Jafar, I, introduce new discover of the category.

Impact of Residual Lead Iodide on Photophysical Properties of Lead Triiodide Perovskite Solar Cells

The role of residual lead iodide on the photophysical properties of methylammonium lead iodide is still unclear and contradictory views exist about its impact. Herein, it is reported that there is a critical amount of residual lead iodide, which is beneficial for the solar cell performance. Transient absorption spectroscopy is used to investigate the charge carrier recombination dynamics in perovskite solar cells and to address the role of different amounts of residual lead iodide. The amount of lead iodide is varied through the perovskite thin film preparation protocol upon a modified two-step fabrication process. Slower carrier dynamics are observed at the perovskite/titanium dioxide interface in the presence of residual lead iodide when exciting the perovskite at the perovskite/titanium interface, which correlates with improved solar cell device performance. Excitation from the perovskite side indicates that the effect of residual lead iodide is primarily at the titanium dioxide interface. Increasing the lead iodide content does not further alter the carrier recombination; on the contrary, it results in lower device performance. This study confirms that the presence of lead iodide can have a beneficial effect, as it reduces charge carrier recombination at the perovskite/titanium dioxide interface.

Reference of 507-63-1, 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 507-63-1 is helpful to your research.

Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 507-63-1, Name is Heptadecafluoro-1-iodooctane, SMILES is IC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F, belongs to iodides-buliding-blocks compound. In a document, author is Rillema, JA, introduce the new discover, Computed Properties of C8F17I.

Effect of insulin on iodide uptake in mouse mammary gland explants

Studies were carried out primarily to assess the role of insulin in regulating iodide uptake in the mammary gland. Using cultured mammary gland explants from virgin and pregnant mice (12-14 days into gestation), insulin (1 mug/ml) was shown to stimulate iodide uptake after a 2-day exposure period. The effect of insulin was manifested by itself, as well as in the presence of cortisol and prolactin. Optimal iodide uptake was observed when tissues were treated with all three lactogenic hormones (insulin, cortisol, and prolactin). In a time-course experiment, the effect of insulin alone was initially observed after a 10-hr treatment; the effect was maintained for 30 hr. In dose-response studies, 1 ng/ml insulin elicited a significant effect after 24 hr in culture; a maximal effect was achieved with 50-100 ng/ml insulin. The optimal cortisol concentration for a maximum stimulation of iodide uptake was 10(-7)M. In a quantitative Western blot analysis employing an antibody to the sodium-iodide symporter, insulin stimulated an upregulation of the transporter protein after a 4-, 8-, or 20-hr treatment with insulin. Perchlorate and thiocyanate abolished the insulin effect on iodide uptake, further suggesting that the insulin response occurs via a stimulation of the sodium-iodide symporter. Clearly, insulin is an important and essential hormone in the lactogenic hormone complex for regulating iodide uptake in the mammary gland, but maximal expression of iodide uptake is only expressed when all three lactogenic hormones are present.

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 507-63-1 is helpful to your research. Computed Properties of C8F17I.

Chemistry, like all the natural sciences, Recommanded Product: Heptadecafluoro-1-iodooctane, begins with the direct observation of nature¡ª in this case, of matter.507-63-1, Name is Heptadecafluoro-1-iodooctane, SMILES is IC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F, belongs to iodides-buliding-blocks compound. In a document, author is Chen, Tse-Wei, introduce the new discover.

Using PEDOT Film Modified Electrode to Monitor Iodide and Its Enhancement of Arsenite Sensing

Iodide was investigated using poly(3,4-ethylenedioxythiophene)/glassy carbon electrode (PEDOT/GCE) as an monitoring tool. When this electrode was scanned to the positive potential (+0.7 V) in the presence of 6×10(-3) M, the redox couple was gradually separated into two redox couples involving the iodide/triiodide and triiodide/iodine redox processes due to the iodide doping behavior occurs easily with the sufficient positive potential and the higher iodide concentration. The I-2-PEDOT may be the doping result and it lowers the activation energy of iodide redox processes. The PEDOT/GCE shows linear current response (I-pa(mA) = 21.553[KI](M) + 8.2602, R-2 = 0.9995, S/N = 3) to iodide. Through the iodide mediator, PEDOT/GCE can determine As(III) with a sensitivity of 303.3 mu A mM(-1) cm(-2). Particularly, it can enhance the current response for As(III) by increasing the iodide molar ratio. The current ratio of IAs(III)/II-was about 1.66 amplification when molar ratio of n(I)-/n(As)(III) was 0.3.

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 507-63-1. Recommanded Product: Heptadecafluoro-1-iodooctane.

Adding a certain compound to certain chemical reactions, such as: 375-80-4, name is 1,6-Diiodoperfluorohexane, belongs to iodides-buliding-blocks compound, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound 375-80-4, Computed Properties of C6F12I2

General procedure: In a typical procedure (IC2F4)2 (45.40g, 0.1mol) was dissolved in 100mL of acetonitrile and 200mL of water in a 500-mL round-bottomed flask. The solution was made basic with NaHCO3 (30.00g, 0.36mol) and then fresh Na2S2O4 (50.00g 0.28mmol, the ratio is 1:2.8) was slowly added with good stirring at 22C. After 20h, fluorine-19 NMR spectroscopy indicated the reaction was complete by disappearance of the -CF2I signal. The solution (NaSO2C2F4)2 and other byproducts are light yellow.

At the same time, in my other blogs, there are other synthetic methods of this type of compound, 1,6-Diiodoperfluorohexane, and friends who are interested can also refer to it.

Reference:
Article; Mei, Hua; Desmarteau, Darryl D.; Journal of Fluorine Chemistry; vol. 160; (2014); p. 12 – 15;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Electric Literature of 375-80-4, The chemical industry reduces the impact on the environment during synthesis 375-80-4, name is 1,6-Diiodoperfluorohexane, I believe this compound will play a more active role in future production and life.

Example 3Purification of dodecafluoro-l,6-diiodohexane (m=3) (via solution)75 mg of a commercial mixture of alpha,omega-diiodoperfluorinated compounds (sold by Apollo Scientific Ltd.) composed of 25% tetrafluoro-l,2-diiodoethane (m=l), 25% octafluoro-1,4- tetraiodobutane (m=2), 25% dodecafluoro-l,6-diiodohexane (m=3) and 25% hexadecafluoro- 1,8-diiodooctane (m=4) were solubilized in 1 ml Of CHCl3, and separately 20 mg of sequestering agent of formula (CH3^N+-(CH2)I2-N+(CH3 )3*2I~, i.e. dodecamethonium iodide, were solubilized in I mI Of CH3OH. The two solutions were then mixed in a test tube which was then closed. After about 2 hours, the formation of a solid white precipitate was observed, which was filtered, washed twice with CCU and dried under vacuum. The results of the performed tests, as reported below, confirmed that this was an adduct of dodecamethonium iodide and dodecafluoro-1,6- diiodohexane.The dodecafluoro-l,6-diiodohexane was then separated from the sequestering agent by sublimation of the crystalline adduct under vacuum at a temperature of about 500C and recovered by recondensation at a temperature of about -198C.100% pure dodecafluoro-l,6-diiodohexane was then obtained. The following tests were conducted on the crystalline adduct:- melting point: 226C;- IR (cm 1, selective bands):? pure dodecamethonium iodide: 3002, 2914, 2851, 1483, 1464, 973, 939, 916, 731;? adduct of dodecamethonium iodide and dodecafluoro-l,6-diiodohexane: 3010, 2941, 2867, 1475, 1203, 1141, 1125, 1081, 963, 909, 731.- 19F NMR (470.6 MHz, CD3OD, 0.002 M):? adduct of dodecamethonium iodide and dodecafluoro-l,6-diiodohexane:deltadelta(lComegaCF2CF2)2 = 0.08, deltadelta(lCF2CF2CF2)2 = 0.01 , deltadelta(lCF2CF2CK)2 = 0.00.An XRD test was performed on the adduct crystal which confirmed the exclusive presence of decamethonium iodide and dodecafluoro-l,6-diiodohexane. In fact, Figure 3 represents the crystalline structure of the adduct in which the molecules of dodecamethonium iodide (the carbon and nitrogen atoms are light grey coloured and the hydrogen atoms white) alternate with the molecules of dodecafluoro-l,6-diiodohexane (carbon atoms are light grey coloured, hydrogen atoms white and the iodine atoms dark grey) and with the iodide atoms (dark grey coloured). Moreover, it was observed that, at the crystalline state, decamethonium iodide and dodecafluoro-l,6-diiodohexane form alternating parallel layers, since the dodecafluoro-1,6- diiodohexane occupies the cavity defined by the spacer chain between the two nitrogen atoms of the dodecamethonium iodide and the two iodides of the same, due to the iodide-iodine interactions generated. Thus, the following crystallographic measurements are reported: As can be observed, in the adduct crystal, the difference delta (B – A) between the distance B between the iodide atoms aligned with the molecule of dodecafluoro-l,6-diiodohexane, as shown in figure 1, and the distance A between the nitrogen atoms belonging to the same dodecamethonium molecule is equal to 0.688 A and significant of the existence of said interactions I- 1~.The following tests were performed on the pure dodecafluoro-l,6-diiodohexane:- IR (cm”1, selective bands):? pure dodecafiuoro-l,6-diiodohexane: 1190, 1130, 1039, 887, 763;- 19F NMR (470.6 MHz, CD3OD, 0.002 M):? pure dodecafiuoro-l,6-diiodohexane: delta = -63.80 (ICF2CF2)2, -112.02 (ICF2CF2)2. The gas chromatography tests also confirmed that this was only 100% dodecafluoro-1,6- diiodohexane.

In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles, 1,6-Diiodoperfluorohexane, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; Politecnico di Milano; WO2009/7302; (2009); A2;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Related Products of 35453-19-1, A common heterocyclic compound, 35453-19-1, name is 5-Amino-2,4,6-triiodoisophthalic acid, molecular formula is C8H4I3NO4, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.

5-Amino-2,4,6-triiodoisophathalic acid (15.38 g, 27.5 mmol, 1.0 equiv.) was refluxed in SOCl2 ( 10OmL, 1.37 mol, 50.0 equiv.) for 4 hours. The volatiles were removed in vacuo and the resultant dark yellow residue was dissolved in ethyl acetate (300 mL). The organic layer was washed with sat. NaHCO3 (3 x 150 mL), water (3 x 150 mL) and brine (150 mL) and concentrated in vacuo. The residue was dissolve in toluene and passed through a short pad of silica, dried (MgSO4) and concentrated in vacuo to yield the title compound as a beige solid (10.74 g, 66 %). IR spectrum in KBr disc/cm”1: v(N-H) 3370, 3470; V(C=O) 1770, 1798

The synthetic route of 35453-19-1 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; IMPERIAL INNOVATIONS LIMITED; KINGS COLLEGE LONDON; GUYS AND ST THOMAS NHS FOUNDATION TRUST; WO2007/26140; (2007); A2;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

A common compound: 35453-19-1, name is 5-Amino-2,4,6-triiodoisophthalic acid, belongs to iodides-buliding-blocks compound, it can change the direction of chemical reaction, and react with certain compounds to generate new functional products. A new synthetic method of this compound is introduced below. 35453-19-1

A. Preparation of 5-Amino-2,4,6-triiodoisophthaloyl Chloride (2) STR1 5-Amino-2,4,6-triiodoisophthalic acid (6.73 Kg, 12.04 mol) 1 was charged and EtOAc was added. SOCl2 (5.73 Kg, 48.17 mol) was added to the slurry in one portion and the mixture was heated at reflux for 4 hours. After the reaction, 24.2 L of unreacted SOCl2 and the solvent were distilled (64-77, 7 hrs. distillation time). The product started to precipitate when the reaction solution cooled to 55; the slurry was stirred overnight, allowing it to cool to room temperature. The solids were collected, washed with cold EtOAc (5, 3.8 L), suction-dried for 3 hours and air-dried at room temperature to give the desired product 2 (3.525 kg, 49.2% yield). The filtrate (about 25 L) was distilled to a volume of 15 L and cooled to 2 overnight. The precipitated product was collected, washed with cold EtOAc (5, 1.5 L), suction-dried and air-dried to give a second crop of the product 2 (0.83 kg, 11.6% yield). The two crops of the product were combined, 4.355 kg (60.8% yield). The product showed one spot by tlc analysis (C6 H5 CH3 /CH3 OH; 9/1).

In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles, 35453-19-1, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; Mallinckrodt, Inc.; US4396598; (1983); A;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com