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Ro 26-4550 trifluoroacetate

reversible inhibitor of interleukin-2 (IL-2) binding to its receptor CAS# 1217448-66-2

Ro 26-4550 trifluoroacetate

Catalog No. BCC5813----Order now to get a substantial discount!

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Quality Control of Ro 26-4550 trifluoroacetate

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Chemical structure

Ro 26-4550 trifluoroacetate

3D structure

Chemical Properties of Ro 26-4550 trifluoroacetate

Cas No. 1217448-66-2 SDF Download SDF
PubChem ID 16760522 Appearance Powder
Formula C28H31F3N4O5 M.Wt 560.57
Type of Compound N/A Storage Desiccate at -20°C
Solubility Soluble to 50 mM in DMSO and to 5 mM in ethanol
Chemical Name methyl (2S)-2-[[2-[(3R)-1-carbamimidoylpiperidin-3-yl]acetyl]amino]-3-[4-(2-phenylethynyl)phenyl]propanoate;2,2,2-trifluoroacetic acid
SMILES COC(=O)C(CC1=CC=C(C=C1)C#CC2=CC=CC=C2)NC(=O)CC3CCCN(C3)C(=N)N.C(=O)(C(F)(F)F)O
Standard InChIKey BVMWPONRCOSTMK-RFPXDPOKSA-N
Standard InChI InChI=1S/C26H30N4O3.C2HF3O2/c1-33-25(32)23(29-24(31)17-22-8-5-15-30(18-22)26(27)28)16-21-13-11-20(12-14-21)10-9-19-6-3-2-4-7-19;3-2(4,5)1(6)7/h2-4,6-7,11-14,22-23H,5,8,15-18H2,1H3,(H3,27,28)(H,29,31);(H,6,7)/t22-,23+;/m1./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.
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 Ro 26-4550 trifluoroacetate

DescriptionCompetitive reversible inhibitor of interleukin-2 (IL-2) binding to its receptor (IC50 = 3 μM for inhibition of IL-2 interaction with IL-2R α-subunit). Appears to compete with IL-2Rα for its binding site on IL-2.

Ro 26-4550 trifluoroacetate Dilution Calculator

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Ro 26-4550 trifluoroacetate Molarity Calculator

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Preparing Stock Solutions of Ro 26-4550 trifluoroacetate

1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 1.7839 mL 8.9195 mL 17.839 mL 35.678 mL 44.5975 mL
5 mM 0.3568 mL 1.7839 mL 3.5678 mL 7.1356 mL 8.9195 mL
10 mM 0.1784 mL 0.8919 mL 1.7839 mL 3.5678 mL 4.4597 mL
50 mM 0.0357 mL 0.1784 mL 0.3568 mL 0.7136 mL 0.8919 mL
100 mM 0.0178 mL 0.0892 mL 0.1784 mL 0.3568 mL 0.446 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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Background on Ro 26-4550 trifluoroacetate

IC50: 3 μM

Ro 26-4550 trifluoroacetate is a competitive reversible inhibitor of interleukin-2 (IL-2) binding to its receptor [1].

Interleukin-2 (IL-2) (a 15.5 kDa cytokine) plays a predominant role in the growth of activated T cells. IL-2 induces T-cell proliferation followed by binding on the T-cell surface with picomolar affinity to a heterotrimeric receptor complex (consisting of R, , and chains). It has proven clinically effective as immunosuppressive agents that antibodies recognize the R receptor subunit (IL-2RR) and discrupte IL-2 binding. Small molecules are capable of preventing the IL-2/IL-2RR interaction as potential orally active successors to the antibody drugs [1].

In vitro: The region of IL-2 perturbed by association with Ro 26-4550 was shown to be involved in the binding to IL-2RR. This suggests that Ro 26-4550 competes with IL-2RR for its binding site on IL-2 to interfer with IL-2/IL-2RR binding. [1] .

Analyses of the X-ray structure of Ro 26-4550 binding at the “hot spot” of IL-2 showed that the protein is changeable and then undergo significant rearrangements to create the small molecule binding site. This observation refutes the perception that protein-protein interactions are flat and featureless and indicates that the surface of IL-2 could exist additional nonobvious binding sites (binding a small molecule with high affinity). However, accurate structure-based predictions will be more difficult because of the adaptive nature of the site [2].

In vivo: So far, no study in vivo has been conducted.

Clinical trial: So far, no clinical study has been conducted.

References:
[1].  Tilley JW, Chen L, Fry DC, Emerson SD, Powers GD, Biondi D, Varnell T, Trilles R, Guthrie R, Mennona F, Kaplan G, LeMahieu RA, Carson M, Han R-J, Liu C-M, Palermo R, Ju G. Identification of a small molecule inhibitor of the IL-2/IL-2Rr receptor interaction which binds to IL-2. J. Am. Chem. Soc. 1997, 119, 7589-7590
[2] Braisted AC, Oslob JD, Delano WL, Hyde J, McDowell RS, Waal N, Yu C, Arkin MR, Raimundo BC.  Discovery of a potent small molecule IL-2 inhibitor through fragment assembly. J Am Chem Soc. 2003 Apr 2;125(13):3714-5.

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References on Ro 26-4550 trifluoroacetate

Discovery of a potent small molecule IL-2 inhibitor through fragment assembly.[Pubmed:12656598]

J Am Chem Soc. 2003 Apr 2;125(13):3714-5.

Using a site-directed fragment discovery method called tethering, we have identified a 60 nM small molecule antagonist of a cytokine/receptor interaction (IL-2/IL2Ralpha) with cell-based activity. Starting with a low micromolar hit, we employed a combination of tethering, structural biology, and computational analysis to design a focused set of 20 compounds. Eight of these compounds were at least 5-fold more active than the original hit. One of these compounds showed a 50-fold enhancement and represents the highest affinity inhibitor reported against this protein-protein target class. This method of coupling selected fragments with a low micromolar hit shows great potential for generating high-affinity lead compounds.

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