Darusentan
Based on 1 Customer Validation
Darusentan (Lu-135252) is a selective endothelin receptor A (ET-A) receptor antagonist, which binds with a Ki of 1.4 nM to the ET-A receptor and a Ki of 184 nM to ET-B receptor, respectively with a 100-fold selectivity for ETA rather than ETB receptors. Darusentan competes for radiolabeled endothelin binding in rat aortic vascular smooth muscle cells (RAVSMs) membranes with single-site kinetics, exhibiting a Ki of 13 nM.
For research use only. We do not sell to patients.
- Purity: 98.60%
- CAS No.: 171714-84-4
- Formula: C22H22N2O6
- Molecular Weight:410.42
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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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Biological Activity
Darusentan ((S)-Darusentan) competes for radiolabeled endothelin binding in rat aortic vascular smooth muscle cells (RAVSMs) membranes with single-site kinetics, exhibiting a Ki=13 nM. In isolated endothelium-denuded rat aortic rings, Darusentan inhibits endothelin-induced vascular contractility with a pA2=8.1±0.14. Darusentan ( 0.001-1μM) inhibits ET-1-induced signaling in cultured RAVSMs[2].
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:Twenty-four (eight per group) male Sprague Dawley rats weighing 175±200 g[3]
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Dosage:30 mg/kg
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Administration:Administered orally in rat food for weeks 3 and 4
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Result:Reversed aortic alterations produced by infusion of Norepinephrine (2.5 μg/kg).
| NCT Number | Sponsor | Condition | Start Date |
Phase
|
|---|---|---|---|---|
| NCT01329991 | Plexxikon| | 2011-05 | PHASE1 |
Chemical Information
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CAS No. 171714-84-4
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Appearance Solid
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Molecular Weight 410.42
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Formula C22H22N2O6
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Color White to off-white
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SMILES
COC1=NC(O[C@H](C(O)=O)C(C2=CC=CC=C2)(C3=CC=CC=C3)OC)=NC(OC)=C1
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Synonyms
Lu-135252
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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
Solvent & Solubility
DMSO : 100 mg/mL (243.65 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)
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: ≥ 2.08 mg/mL (5.07 mM); Clear solution
This protocol yields a clear solution of ≥ 2.08 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (20.8 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.
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 (281 KB)
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SDS (396 KB)
- English - EN (396 KB)
- Français - FR (396 KB)
- Deutsch - DE (396 KB)
- Norwegian - NO (396 KB)
- Español - ES (396 KB)
- Swedish - SV (396 KB)
- Italian - IT (396 KB)
- Portuguese - PT (396 KB)
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Handling Instructions (2659 KB)
References
[1]. Frank Enseleit, et al. Darusentan, a selective endothelin A receptor antagonist, for the oral treatment of resistant hypertension. Ther Adv Cardiovasc Dis. 2010 Aug;4(4):231-40. [Content Brief]
[2]. Liang F, et al. Darusentan is a potent inhibitor of endothelin signaling and function in both large and small arteries. Can J Physiol Pharmacol. 2010 Aug;88(8):840-9. [Content Brief]
[3]. H H Dao, et al. Norepinephrine-induced aortic hyperplasia and extracellular matrix deposition are endothelin-dependent. J Hypertens. 2001 Nov;19(11):1965-73. [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 | 2.4365 mL | 12.1826 mL | 24.3653 mL | 60.9132 mL |
| 5 mM | 0.4873 mL | 2.4365 mL | 4.8731 mL | 12.1826 mL | |
| 10 mM | 0.2437 mL | 1.2183 mL | 2.4365 mL | 6.0913 mL | |
| 15 mM | 0.1624 mL | 0.8122 mL | 1.6244 mL | 4.0609 mL | |
| 20 mM | 0.1218 mL | 0.6091 mL | 1.2183 mL | 3.0457 mL | |
| 25 mM | 0.0975 mL | 0.4873 mL | 0.9746 mL | 2.4365 mL | |
| 30 mM | 0.0812 mL | 0.4061 mL | 0.8122 mL | 2.0304 mL | |
| 40 mM | 0.0609 mL | 0.3046 mL | 0.6091 mL | 1.5228 mL | |
| 50 mM | 0.0487 mL | 0.2437 mL | 0.4873 mL | 1.2183 mL | |
| 60 mM | 0.0406 mL | 0.2030 mL | 0.4061 mL | 1.0152 mL | |
| 80 mM | 0.0305 mL | 0.1523 mL | 0.3046 mL | 0.7614 mL | |
| 100 mM | 0.0244 mL | 0.1218 mL | 0.2437 mL | 0.6091 mL |
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