SB 452533

Potent TRPV1 receptor antagonist CAS# 459429-39-1

SB 452533

Catalog No. BCC7620----Order now to get a substantial discount!

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Chemical structure

SB 452533

3D structure

Chemical Properties of SB 452533

Cas No. 459429-39-1 SDF Download SDF
PubChem ID 9842609 Appearance Powder
Formula C18H22BrN3O M.Wt 376.29
Type of Compound N/A Storage Desiccate at -20°C
Solubility Soluble to 100 mM in DMSO and to 10 mM in ethanol with gentle warming
Chemical Name 1-(2-bromophenyl)-3-[2-(N-ethyl-3-methylanilino)ethyl]urea
SMILES CCN(CCNC(=O)NC1=CC=CC=C1Br)C2=CC=CC(=C2)C
Standard InChIKey IFJYEGJUQIBBQV-UHFFFAOYSA-N
Standard InChI InChI=1S/C18H22BrN3O/c1-3-22(15-8-6-7-14(2)13-15)12-11-20-18(23)21-17-10-5-4-9-16(17)19/h4-10,13H,3,11-12H2,1-2H3,(H2,20,21,23)
General tips For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.
We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months.
Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it.
About Packaging 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial.
2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial.
3. Try to avoid loss or contamination during the experiment.
Shipping Condition Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request.

Biological Activity of SB 452533

DescriptionPotent TRPV1 antagonist against capsaicin (pKb = 7.7), noxious heat and acid-mediated (pIC50 = 7.0) receptor activation (pKi = 6.22 at the recombinant hTRPV1 receptor). Exhibits analgesic properties.

SB 452533 Dilution Calculator

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Preparing Stock Solutions of SB 452533

1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 2.6575 mL 13.2876 mL 26.5752 mL 53.1505 mL 66.4381 mL
5 mM 0.5315 mL 2.6575 mL 5.315 mL 10.6301 mL 13.2876 mL
10 mM 0.2658 mL 1.3288 mL 2.6575 mL 5.315 mL 6.6438 mL
50 mM 0.0532 mL 0.2658 mL 0.5315 mL 1.063 mL 1.3288 mL
100 mM 0.0266 mL 0.1329 mL 0.2658 mL 0.5315 mL 0.6644 mL
* Note: If you are in the process of experiment, it's necessary to make the dilution ratios of the samples. The dilution data above is only for reference. Normally, it's can get a better solubility within lower of Concentrations.

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References on SB 452533

The effect of Sb-surfactant on GaInP CuPtB type ordering: assessment through dark field TEM and aberration corrected HAADF imaging.[Pubmed:28367549]

Phys Chem Chem Phys. 2017 Apr 12;19(15):9806-9810.

We report on the effect of Sb on the microstructure of GaInP layers grown by metal organic vapor phase epitaxy (MOVPE). These layers exhibit a CuPtB single variant ordering due to the intentional misorientation of the substrate (Ge(001) substrates with 6 degrees misorientation towards the nearest [111] axis). The use of Sb as a surfactant during the GaInP growth does not modify the type of ordering, but it is found that the order parameter (eta) decreases with increasing Sb flux. Dark field microscopy reveals a variation of the angle of the antiphase boundaries (APBs) with Sb amount. The microstructure is assessed through high angle annular dark field (HAADF) experiments and image simulation revealing Z-contrast loss in APBs due to the superposition of ordered domains.

Direct nucleation, morphology and compositional tuning of InAs1-x Sb x nanowires on InAs (111) B substrates.[Pubmed:28346221]

Nanotechnology. 2017 Apr 21;28(16):165601.

III-V ternary nanowires are interesting due to the possibility of modulating their physical and material properties by tuning their material composition. Amongst them InAs1-x Sb x nanowires are good candidates for applications such as Infrared detectors. However, this material has not been grown directly from substrates, in a large range of material compositions. Since the properties of ternaries are alterable by tuning their composition, it is beneficial to gain access to a wide range of composition tunability. Here we demonstrate direct nucleation and growth of InAs1-x Sb x nanowires from Au seed particles over a broad range of compositions (x = 0.08-0.75) for different diameters and surface densities by means of metalorganic vapor phase epitaxy. We investigate how the nucleation, morphology, solid phase Sb content, and growth rate of these nanowires depend on the particle dimensions, and on growth conditions such as the vapor phase composition, V/III ratio, and temperature. We show that the solid phase Sb content of the nanowires remains invariant towards changes of the In precursor flow. We also discuss that at relatively high In flows the growth mechanism alters from Au-seeded to what is referred to as semi In-seeded growth. This change enables growth of nanowires with a high solid phase Sb content of 0.75 that are not feasible via Au-seeded growth. Independent of the growth conditions and morphology, we report that the nanowire Sb content changes over their length, from lower Sb contents at the base, increasing to higher amounts towards the tip. We correlate the axial Sb content variations to the axial growth rate measured in situ. We also report spontaneous core-shell formation for Au-seeded nanowires, where the core is Sb-rich in comparison to the Sb-poor shell.

Differing Mechanisms of Death Induction by Fluorinated Taxane SB-T-12854 in Breast Cancer Cells.[Pubmed:28373418]

Anticancer Res. 2017 Apr;37(4):1581-1590.

BACKGROUND/AIM: Classical taxanes are routinely used in cancer therapy. In this study, mechanisms involved in death induction by the novel fluorine-containing taxane SB-T-12854 were investigated. MATERIALS AND METHODS: We employed breast cancer SK-BR-3, MCF-7 and T47D cell lines to assess activation of individual caspases, changes in the expression of proteins of the Bcl-2 family, and the release of pro-apoptotic factors from mitochondria into the cytosol after SB-T-12854 treatment. RESULTS: Caspase-2, -8, and -9 were activated in SK-BR-3 and MCF-7 cells. Only caspase-8 was activated in T47D cells. Caspase-7 and -6 were activated in all tested cells while caspase-3 was activated only in SK-BR-3 cells. Pro-apoptotic Bad protein seems to be important for cell death induction in all tested cells. Anti-apoptotic Bcl-2 and pro-apoptotic Bim, Bok, Bid and Bik seem to be also associated with cell death induction in some of the tested cells. The mitochondrial apoptotic pathway was significantly activated in association with the release of cytochrome c and Smac from mitochondria, but only in SK-BR-3 cells, not in MCF-7 and T47D cells. CONCLUSION: Cell death induced by SB-T-12854, in the tested breast cancer cells, differs regarding activation of caspases, changes in levels of pro-apoptotic and anti-apoptotic proteins of the Bcl-2 family and activation of the mitochondrial apoptotic pathway.

Critical evaluation of strategies for single and simultaneous determinations of As, Bi, Sb and Se by hydride generation inductively coupled plasma optical emission spectrometry.[Pubmed:28340714]

Talanta. 2017 May 15;167:217-226.

A systematic study of hydride generation (HG) of As, Bi, Sb and Se from solutions containing As(III), As(V), Bi(III), Sb(III), Sb(V), Se(IV) and Se(VI) was presented. Hydrides were generated in a gas-liquid phase separation system using a continuous flow vapor generation accessory (VGA) by mixing acidified aqueous sample, HCl and sodium borohydride reductant (NaBH4) solutions on-line. For detection, a simultaneous axially viewed inductively coupled plasma optical emission spectrometer (ICP-OES) was applied. Effects of the HCl concentration (related to sample and additional acid solutions) and type of the pre-reducing agents used for reduction of As(V), Sb(V) and Se(VI) into As(III), Sb(III) and Se(IV) on the analytical responses of As, Bi, Sb and Se were studied and discussed. Two compromised HG reaction conditions for simultaneous measurements of As+Bi+Sb (CC1) or As+Sb+Se (CC2) were established. It was found that choice of the pre-reductant prior to formation of the hydrides is critical in obtaining the dependable results of the analysis. Accordingly, for a As(III)+As(V)+Bi(III)+Sb(III)+Sb(V) mixture and using CC1, thiourea/thiourea-ascorbic acid interfered in Bi determination and hence, total As+Sb could be measured. If L-cysteine/L-cysteine-ascorbic acid were used, measurements of total Bi+Sb was possible in these HG reaction conditions. For a As(III)+As(V)+Sb(III)+Sb(V)+Se(IV)+Se(VI) mixture and using CC2, thiourea/thiourea-ascorbic acid and L-cysteine/L-cysteine-ascorbic acid influenced HG of Se but ensured total As+Sb determination. In contrast, heating a sample solution with HCl, although did not pre-reduce As(V) and Sb(V), assured quantitative reduction of Se(VI) to Se(IV). Finally, considering all favorable pre-reducing and HG conditions, methodologies for reliable determination of total As, Bi, Sb and Se by HG-ICP-OES were proposed. Strategies for single-, two- and three-element measurements were evaluated and validated, obtaining the detection limits (DLs) below 0.1ngg(-1) and precision typically in the range of 1.4-3.9% RSD.

[3H]A-778317 [1-((R)-5-tert-butyl-indan-1-yl)-3-isoquinolin-5-yl-urea]: a novel, stereoselective, high-affinity antagonist is a useful radioligand for the human transient receptor potential vanilloid-1 (TRPV1) receptor.[Pubmed:17660385]

J Pharmacol Exp Ther. 2007 Oct;323(1):285-93.

1-((R)-5-tert-butyl-indan-1-yl)-3-isoquinolin-5-yl-urea (A-778317) is a novel, stereoselective, competitive antagonist that potently blocks transient receptor potential vanilloid-1 (TRPV1) receptor-mediated changes in intracellular calcium concentrations (pIC50 = 8.31 +/- 0.13). The (S)-stereoisomer, 1-((S)-5-tert-butyl-indan-1-yl)-3-isoquinolin-5-yl-urea (A-778316), is 6.8-fold less potent (pIC50 = 7.47 +/- 0.07). A-778317 also potently blocks capsaicin and acid activation of native rat TRPV1 receptors in dorsal root ganglion neurons. A-778317 was tritiated ([3H]A-778317; 29.3 Ci/mmol) and used to study recombinant human TRPV1 (hTRPV1) receptors expressed in Chinese ovary cells (CHO) cells. [3H]A-778317 labeled a single class of binding sites in hTRPV1-expressing CHO cell membranes with high affinity (KD = 3.4 nM; Bmax = 4.0 pmol/mg protein). Specific binding of 2 nM [3H]A-778317 to hTRPV1-expressing CHO cell membranes was reversible. The rank-order potency of TRPV1 receptor antagonists to inhibit binding of 2 nM [3H]A-778317 correlated well with their functional potencies in blocking TRPV1 receptor activation. The present data demonstrate that A-778317 blocks polymodal activation of the TRPV1 receptor by binding to a single high-affinity binding site and that [3H]A-778317 possesses favorable binding properties to facilitate further studies of hTRPV1 receptor pharmacology.

Conservation of functional and pharmacological properties in the distantly related temperature sensors TRVP1 and TRPM8.[Pubmed:15911692]

Mol Pharmacol. 2005 Aug;68(2):518-27.

Members of the transient receptor potential (TRP) superfamily of ion channels have now been defined as molecular transducers capable of reproducing the spectrum of temperature sensation exhibited by mammals. Because of their pivotal role in sensory transduction, many of these channels represent good targets for drug discovery. With a view to gaining further insight into the functional and pharmacological properties of these channels, we have used the whole-cell patch-clamp technique to study the human cold-sensitive menthol receptor transient receptor potential melastatin 8 (TRPM8) and compared its behavior with that of its distant relative, the heat-sensitive capsaicin-gated transient receptor potential vanilloid 1 (TRPV1). It is remarkable to find that TRPM8, in addition to its behavior as an outwardly rectifying, nonselective cation channel, shares many functional and pharmacological properties with TRPV1. TRPM8 exhibits prominent time- and voltage-dependent behavior, a property that may underlie the conserved rectification or gating mechanisms exhibited by these channels. We also show that TRPM8 is modulated by ethanol but unlike TRPV1 is insensitive to extracellular acidification. There is also significant overlap in the antagonist pharmacology of these channels with many TRPV1 antagonists such as capsazepine, N-(4-tertiarybutylphenyl)-4-(3-chloropyridin-2-yl) tetrahydropyrazine-1(2H)-carboxamide (BCTC), (2R)-4-(3-chloro-2-pyridinyl)-2-methyl-N-[4-(trifluoromethyl)phenyl]-1-piperazine carboxamide (CTPC), and N-(2-bromophenyl)-N'-{2-[ethyl(3-methylphenyl)amino]ethyl}-urea (SB-452533) exhibiting similar activity at TRPM8. Overall, the degree of pharmacological overlap between TRPV1 and TRPM8 has implications for the interpretation of studies conducted with these ligands to date and highlights a clear challenge for the design of selective TRP channel antagonists. Our finding that N-(3-methoxyphenyl)-4-chlorocinnamide (SB-366791), at least, represents an apparently selective antagonist for TRPV1 suggests that this goal is attainable.

Discovery of small molecule antagonists of TRPV1.[Pubmed:15203132]

Bioorg Med Chem Lett. 2004 Jul 16;14(14):3631-4.

Small molecule antagonists of the vanilloid receptor 1 (TRPV1, also known as VR1) are disclosed. Ureas such as 5 (SB-452533) were used to explore the structure activity relationship with several potent analogues identified. Pharmacological studies using electrophysiological and FLIPR Ca(2+) based assays showed compound 5 was an antagonist versus capsaicin, noxious heat and acid mediated activation of TRPV1. Study of a quaternary salt of 5 supports a mode of action in which compounds from this series cause inhibition via an extracellularly accessible binding site on the TRPV1 receptor.

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