UFP 803Urotensin-II (UT) antagonist CAS# 879497-82-2 |
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| Cas No. | 879497-82-2 | SDF | Download SDF |
| PubChem ID | 56972202 | Appearance | Powder |
| Formula | C50H64N10O12S2 | M.Wt | 1061.24 |
| Type of Compound | N/A | Storage | Desiccate at -20°C |
| Solubility | Soluble in sterile water | ||
| Sequence | DXFWXYCV (Modifications: X-2 = Pen, Trp-4 = D-Trp, X-5 = Dab, Disulfide bridge between 2 - 7) | ||
| Chemical Name | (2S)-2-[[(4R,7S,10S,13R,16S,19R)-19-[[(2S)-2-amino-3-carboxypropanoyl]amino]-10-(2-aminoethyl)-16-benzyl-7-[(4-hydroxyphenyl)methyl]-13-(1H-indol-3-ylmethyl)-20,20-dimethyl-6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentazacycloicosane-4-carbonyl]amino]-3-methylbutanoic acid | ||
| SMILES | CC(C)C(C(=O)O)NC(=O)C1CSSC(C(C(=O)NC(C(=O)NC(C(=O)NC(C(=O)NC(C(=O)N1)CC2=CC=C(C=C2)O)CCN)CC3=CNC4=CC=CC=C43)CC5=CC=CC=C5)NC(=O)C(CC(=O)O)N)(C)C | ||
| Standard InChIKey | LRELVPJTCGYTSS-XKDXTNGGSA-N | ||
| Standard InChI | InChI=1S/C50H64N10O12S2/c1-26(2)40(49(71)72)59-47(69)38-25-73-74-50(3,4)41(60-42(64)32(52)23-39(62)63)48(70)57-36(20-27-10-6-5-7-11-27)44(66)56-37(22-29-24-53-33-13-9-8-12-31(29)33)46(68)54-34(18-19-51)43(65)55-35(45(67)58-38)21-28-14-16-30(61)17-15-28/h5-17,24,26,32,34-38,40-41,53,61H,18-23,25,51-52H2,1-4H3,(H,54,68)(H,55,65)(H,56,66)(H,57,70)(H,58,67)(H,59,69)(H,60,64)(H,62,63)(H,71,72)/t32-,34-,35-,36-,37+,38-,40-,41+/m0/s1 | ||
| 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. |
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| 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. |
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| 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. | ||
| Description | Urotensin-II (UT) receptor ligand; behaves as a silent antagonist in most in vitro assays and in vivo, but does retain small residual agonist activity under certain conditions in some assays. Competitively antagonizes U-II induced contractions in the rat aorta (pIC50 = 7.46) and prevents plasma extravasation elicited by U-II in mice in vivo. |
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In vitro and in vivo pharmacological characterization of the novel UT receptor ligand [Pen5,DTrp7,Dab8]urotensin II(4-11) (UFP-803).[Pubmed:16273120]
Br J Pharmacol. 2006 Jan;147(1):92-100.
The novel urotensin-II (U-II) receptor (UT) ligand, [Pen(5),DTrp(7),Dab(8)]U-II(4-11) (UFP-803), was pharmacologically evaluated and compared with urantide in in vitro and in vivo assays. In the rat isolated aorta, UFP-803 was inactive alone but, concentration dependently, displaced the contractile response to U-II to the right, revealing a competitive type of antagonism and a pA(2) value of 7.46. In the FLIPR [Ca(2+)](i) assay, performed at room temperature in HEK293(hUT) and HEK293(rUT) cells, U-II increased [Ca(2+)](i) with pEC(50) values of 8.11 and 8.48. Urantide and UFP-803 were inactive as agonists, but antagonized the actions of U-II by reducing, in a concentration-dependent manner, the agonist maximal effects with apparent pK(B) values in the range of 8.45-9.05. In a separate series of experiments performed at 37 degrees C using a cuvette-based [Ca(2+)](i) assay and CHO(hUT) cells, urantide mimicked the [Ca(2+)](i) stimulatory effect of U-II with an intrinsic activity (alpha) of 0.80, while UFP-803 displayed a small (alpha=0.21) but consistent residual agonist activity. When the same experiments were repeated at 22 degrees C (a temperature similar to that in FLIPR experiments), urantide displayed a very small intrinsic activity (alpha=0.11) and UFP-803 was completely inactive as an agonist. In vivo in mice, UFP-803 (10 nmol kg(-1)) antagonized U-II (1 nmol kg(-1))-induced increase in plasma extravasation in various vascular beds, while being inactive alone. In conclusion, UFP-803 is a potent UT receptor ligand which displays competitive/noncompetitive antagonist behavior depending on the assay. While UFP-803 is less potent than urantide, it displayed reduced residual agonist activity and as such may be a useful pharmacological tool.
