A-317491
Based on 5 publication(s) in Google Scholar
A-317491 is a potent, selective and non-nucleotide antagonist of P2X3 and P2X2/3 receptors, with Kis of 22, 22, 9, and 92 nM for hP2X3, rP2X3, hP2X2/3, and rP2X2/3, respectively. A-317491 is highly selective (IC50>10 μM) over other P2 receptors and other neurotransmitter receptors, ion channels, and enzymes. A-317491 reduces inflammatory and neuropathic pain by blocking P2X3 and P2X2/3 receptor-mediated calcium flux.
For research use only. We do not sell to patients.
- Purity: 98.64%
- CAS No.: 475205-49-3
- Formula: C33H27NO8
- Molecular Weight:565.57
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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) A-317491
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Customer Validation & Images
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IF
All P2X Receptor Isoforms
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Biological Activity
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P2X3 Receptor |
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Cell Line
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Type | Value | Description | References |
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| CHO | EC50 |
13 μM
Compound: 6
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Inhibition of HIV1 envelope gp41-mediated fusion of CHO cells expressing HIV1 envelope with calcein-AM labeled SupT1 cells by fluorescence assay
Inhibition of HIV1 envelope gp41-mediated fusion of CHO cells expressing HIV1 envelope with calcein-AM labeled SupT1 cells by fluorescence assay
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[PMID: 20004576] |
A-317491 potently blocks recombinant human and rat P2X3 and P2X2/3 receptor-mediated calcium flux (Ki=22-92 nM) [1].
A-317491 (1 nM-10 μM) produces a concentration-dependent block of dorsal root ganglion (DRG) currents with an IC50 of 15 nM[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
A-317491 (3-30 mg/kg; a single .v.) exhibits the plasma half-life (7.38 h), clearance rate (1.83 L/h/kg), and volume of distribution (0.17 L/kg)[2].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Animal Model:Male adult Sprague-Dawley rats received an intraplantar injection of Freund's complete adjuvant[2]
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Dosage:0.1, 1, 3, 10, 30 mg/kg
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Administration:A single s.c.
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Result:Produced a dose-dependent reduction in mechanical hyperalgesia 1 h, 3 h and 5 h post-administration.
Chemical Information
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CAS No. 475205-49-3
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Appearance Solid
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Molecular Weight 565.57
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Formula C33H27NO8
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Color Off-white to pink
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SMILES
O=C(C1=CC(C(N(CC2=CC=CC(OC3=CC=CC=C3)=C2)[C@H]4CCCC5=C4C=CC=C5)=O)=C(C(O)=O)C=C1C(O)=O)O
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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 (5)
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Journal Impact Factor
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Most Recent
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Research (Wash D C)
2025 Oct 20:8:0932. PMID: 41122266 -
Int J Nanomedicine
2017 Nov 9:12:8171-8183. PMID: 29184406
A-317491 purchased from MedChemExpress. Usage Cited in: Int J Nanomedicine. 2017 Nov 9:12:8171-8183. [Abstract]
PC12 cell fluorescence images of baseline (before ATP stimulation), 0 s (the brightest fluorescence images after ATP stimulation), 50 s, 100 s, 150 s, and 200 s. Ca2+ peak increase (∆F/F0) in PC12 cells incubated with A-317491 salt, CSOSA/NLC, and CSOSA/NLC/A-317491 for predetermined time under 100 μM ATP stimulation.
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Exp Physiol
Amplified P2X3 pathway activity in muscle afferent dorsal root ganglion neurons and exercise pressor reflex regulation in hindlimb ischaemia-reperfusion. [Abstract]2024 Apr;109(4):524-534. PMID: 38213082 -
Biochem Biophys Res Commun
Inflammatory mediator bradykinin increases population of sensory neurons expressing functional T-type Ca(2+) channels. [Abstract]2016 Apr 29;473(2):396-402. PMID: 26944020 -
Neurourol Urodyn
Estrogen inhibits bladder overactivity in rats with cyclophosphamide-induced cystitis via downregulating the expression of P2X3 receptors in bladder epithelium cells. [Abstract]2022 Jan;41(1):174-187. PMID: 34622458
Solvent & Solubility
DMSO : ≥ 47 mg/mL (83.10 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 (4.42 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 (4.42 mM); Suspended solution; Need ultrasonic
This protocol yields a suspended solution of 2.5 mg/mL. Suspended solution can be used for oral and intraperitoneal injection.
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 (284 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]. Jarvis MF, et, al. A-317491, a novel potent and selective non-nucleotide antagonist of P2X3 and P2X2/3 receptors, reduces chronic inflammatory and neuropathic pain in the rat. Proc Natl Acad Sci U S A. 2002 Dec 24;99(26):17179-84. [Content Brief]
[2]. Wu G, et, al. A-317491, a selective P2X3/P2X2/3 receptor antagonist, reverses inflammatory mechanical hyperalgesia through action at peripheral receptors in rats. Eur J Pharmacol. 2004 Nov 3;504(1-2):45-53. [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 | 1.7681 mL | 8.8406 mL | 17.6813 mL | 44.2032 mL |
| 5 mM | 0.3536 mL | 1.7681 mL | 3.5363 mL | 8.8406 mL | |
| 10 mM | 0.1768 mL | 0.8841 mL | 1.7681 mL | 4.4203 mL | |
| 15 mM | 0.1179 mL | 0.5894 mL | 1.1788 mL | 2.9469 mL | |
| 20 mM | 0.0884 mL | 0.4420 mL | 0.8841 mL | 2.2102 mL | |
| 25 mM | 0.0707 mL | 0.3536 mL | 0.7073 mL | 1.7681 mL | |
| 30 mM | 0.0589 mL | 0.2947 mL | 0.5894 mL | 1.4734 mL | |
| 40 mM | 0.0442 mL | 0.2210 mL | 0.4420 mL | 1.1051 mL | |
| 50 mM | 0.0354 mL | 0.1768 mL | 0.3536 mL | 0.8841 mL | |
| 60 mM | 0.0295 mL | 0.1473 mL | 0.2947 mL | 0.7367 mL | |
| 80 mM | 0.0221 mL | 0.1105 mL | 0.2210 mL | 0.5525 mL |
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