Rostafuroxin
Based on 2 publication(s) in Google Scholar
Rostafuroxin (PST 2238), a digitoxigenin derivative, is an orally active and potent Na+,K+-ATPase (ATP1A1) antognist. Rostafuroxin binds specifically to the ATP1A1 extracellular domain and blocks respiratory syncytial virus (RSV)-triggered EGFR Tyr845 phosphorylation. Rostafuroxin has antihypertensive and anti-RSV activity.
For research use only. We do not sell to patients.
- Purity: 98.02%
- CAS No.: 156722-18-8
- Formula: C23H34O4
- Molecular Weight:374.51
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Storage:Powder -20°C, 3 years , 4°C, 2 years ; In solvent -80°C, 2 years , -20°C, 1 year
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Biological Activity
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Chemical Information
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Solvent & Solubility
- Purity & Documentation
- References
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Help & FAQs
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Publications Citing Use of MedChemExpress (MCE) Rostafuroxin
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Biological Activity
Rostafuroxin (PST 2238) competitively inhibits Ouabain (HY-B0542) binding and signaling. Rostafuroxin antagonizes the molecularand functional effects of Ouabain by reversing the ouabain-induced, Src-dependent Na+,K+-ATPase phosphorylation and activation[3][4].
Rostafuroxin (0.125-128 μM; for 24 h post treatment) has less than 20% reduction in cell viability in A549 cells and HSAEC. Rostafuroxin inhibits the expression of RSV-GFP in HSAEC (IC50=1.8 μM) and A549 cells (IC50=14.8 μM)[3].
Rostafuroxin displaced [3H]Ouabain from the dog kidney Na+,K+-ATPase receptor (IC50=1.5 nM), is devoid of cardiac inotropic activity in isolated guinea pig atria, and shows no affinity up to 10-4 M with general (R1, R2, a1, a2, A1, A2, M1, M2, H1, H2, 5-HT1, 5-HT2, Ca2+ channels, TXA2/PGH2, PAF, GABAA, GABAB, DA-NE-5-HT uptake, glutammate,glycine, benzodiazepine) and hormonal (estrogenic, progestinic, androgenic, mineralcorticoid) receptors[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Animal Model:Male 7-week-old Wistar rats[4]
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Dosage:1 mg/kg
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Administration:Gavage; daily; for 3 weeks
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Result:Decreased SBP, improved acetylcholine-induced relaxation via enhanced nitric oxide synthesis and bioavailability, decreased superoxide anion generation from NAD(P)H oxidase and cyclooxygenase-2 and reduced cytoplasmic tyrosine kinase Src phosphorylation.
| NCT Number | Sponsor | Condition | Start Date |
Phase
|
|---|---|---|---|---|
| NCT01329991 | Plexxikon| | 2011-05 | PHASE1 |
Chemical Information
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CAS No. 156722-18-8
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Appearance Solid
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Molecular Weight 374.51
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Formula C23H34O4
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Color White to off-white
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SMILES
O[C@]([C@@](CC[C@@]1([H])[C@@]2(CC[C@H](O)C1)C)([H])[C@]2([H])CC3)(CC[C@@]4(C5=COC=C5)O)[C@]34C
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Synonyms
PST 2238
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Powder -20°C 3 years 4°C 2 years In solvent -80°C 2 years -20°C 1 year
Publications (2)
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Journal Impact Factor
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Most Recent
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Int J Mol Sci
The Alpha-1 Subunit of the Na+/K+-ATPase (ATP1A1) Is a Host Factor Involved in the Attachment of Porcine Epidemic Diarrhea Virus. [Abstract]2023 Feb 16;24(4):4000. PMID: 36835408 -
mBio
ATP1A1 enhances porcine reproductive and respiratory syndrome virus type 2 attachment and internalization. [Abstract]2026 Apr 8;17(4):e0389625. PMID: 41773865
Solvent & Solubility
DMSO : ≥ 50 mg/mL (133.51 mM; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)
* "≥" means soluble, but saturation unknown.
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
Select the appropriate dissolution method based on your experimental animal and administration route.
- For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
- To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for In Vivo experiments, it is recommended to prepare freshly and use it on the same day.
- The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.
Add each solvent one by one: 10% DMSO 40% PEG300 5% Tween-80 45% Saline
Solubility: ≥ 2.5 mg/mL (6.68 mM); Clear solution
This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.
Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
Add each solvent one by one: 10% DMSO 90% (20% SBE-β-CD in Saline)
Solubility: ≥ 2.5 mg/mL (6.68 mM); Clear solution
This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 900 μL 20% SBE-β-CD in Saline, and mix evenly.
Preparation of 20% SBE-β-CD in Saline (4°C, storage for one week): 2 g SBE-β-CD powder is dissolved in 10 mL Saline, completely dissolve until clear.
Please enter the basic information of animal experiments:
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Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
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%DMSO +
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
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%+
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+%Tween-80 + +
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%Saline +
The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).
Working solution concentration: 0.22 mg/mL
Method for preparing stock solution: mg drug dissolved in μL DMSO. Stock solution concentration: mg/mL.
1. Take μL DMSO stock solution;
2. Add μL .
μL , mix evenly;
3. Then add μL Tween 80, mix evenly;
4. Then add μL
Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
Purity & Documentation
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Data Sheet (280 KB)
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SDS (252 KB)
- English - EN (252 KB)
- Français - FR (252 KB)
- Deutsch - DE (252 KB)
- Norwegian - NO (252 KB)
- Español - ES (252 KB)
- Swedish - SV (252 KB)
- Italian - IT (252 KB)
- Portuguese - PT (252 KB)
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Handling Instructions (2659 KB)
References
[1]. Quadri L, et al. 17 beta-(3-furyl)-5 beta-androstane-3 beta, 14 beta, 17 alpha-triol (PST 2238). A very potent antihypertensive agent with a novel mechanism of action. J Med Chem. 1997 May 23;40(11):1561-4. [Content Brief]
[2]. Ferrari P, et al. PST 2238: A new antihypertensive compound that modulates Na,K-ATPase in genetic hypertension. J Pharmacol Exp Ther. 1999 Mar;288(3):1074-83. [Content Brief]
[3]. Matthias Lingemann, et al. The alpha-1 subunit of the Na+,K+-ATPase (ATP1A1) is required for macropinocytic entry of respiratory syncytial virus (RSV) in human respiratory epithelial cells. PLoS Pathog. 2019 Aug 5;15(8):e1007963. [Content Brief]
[4]. Camilla F Wenceslau, et al. Rostafuroxin ameliorates endothelial dysfunction and oxidative stress in resistance arteries from deoxycorticosterone acetate-salt hypertensive rats: the role of Na+,K+-ATPase/cSRC pathway. J Hypertens. 2014 Mar;32(3):542-54. [Content Brief]
Complete Stock Solution Preparation Table
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.
| Optional Solvent | Concentration Solvent Mass | 1 mg | 5 mg | 10 mg | 25 mg |
|---|---|---|---|---|---|
| DMSO | 1 mM | 2.6702 mL | 13.3508 mL | 26.7016 mL | 66.7539 mL |
| 5 mM | 0.5340 mL | 2.6702 mL | 5.3403 mL | 13.3508 mL | |
| 10 mM | 0.2670 mL | 1.3351 mL | 2.6702 mL | 6.6754 mL | |
| 15 mM | 0.1780 mL | 0.8901 mL | 1.7801 mL | 4.4503 mL | |
| 20 mM | 0.1335 mL | 0.6675 mL | 1.3351 mL | 3.3377 mL | |
| 25 mM | 0.1068 mL | 0.5340 mL | 1.0681 mL | 2.6702 mL | |
| 30 mM | 0.0890 mL | 0.4450 mL | 0.8901 mL | 2.2251 mL | |
| 40 mM | 0.0668 mL | 0.3338 mL | 0.6675 mL | 1.6688 mL | |
| 50 mM | 0.0534 mL | 0.2670 mL | 0.5340 mL | 1.3351 mL | |
| 60 mM | 0.0445 mL | 0.2225 mL | 0.4450 mL | 1.1126 mL | |
| 80 mM | 0.0334 mL | 0.1669 mL | 0.3338 mL | 0.8344 mL | |
| 100 mM | 0.0267 mL | 0.1335 mL | 0.2670 mL | 0.6675 mL |
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