RS-127445
Based on 3 publication(s) in Google Scholar
RS-127445 is a selective, high affinity, orally bioavailable 5-HT2B receptor antagonist with a pKi of 9.5. RS-127445 shows 1000 fold selectivity for this receptor as compared to numerous other receptor and ion channel binding sites.
For research use only. We do not sell to patients.
- Purity: 99.95%
- CAS No.: 199864-87-4
- Formula: C17H16FN3
- Molecular Weight:281.33
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Storage:
4°C, sealed storage, away from moisture
* In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)
To place orders, for customer services and technical support, please contact: MedChemExpress USA
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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) RS-127445
MoreAll 5-HT Receptor Isoforms
More
Biological Activity
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5-HT2B Receptor |
5-HT2B Receptor 9.5 nM (pKi) |
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Cell Line
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Type | Value | Description | References |
|---|---|---|---|---|
| CHO-K1 | IC50 |
0.7 nM
Compound: RS-127445
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Antagonist activity at 5-HT2B receptor expressed in CHOK1 cells assessed as inhibition of serotonin-induced intracellular Ca2+ flux by aequorin luminescence assay
Antagonist activity at 5-HT2B receptor expressed in CHOK1 cells assessed as inhibition of serotonin-induced intracellular Ca2+ flux by aequorin luminescence assay
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[PMID: 19307114] |
| CHO-K1 | IC50 |
19 nM
Compound: RS-127445
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Antagonist activity at 5-HT2B receptor expressed in CHOK1 cells assessed as inhibition of serotonin-induced intracellular Ca2+ flux by aequorin luminescence assay in presence of 4% human serum albumin
Antagonist activity at 5-HT2B receptor expressed in CHOK1 cells assessed as inhibition of serotonin-induced intracellular Ca2+ flux by aequorin luminescence assay in presence of 4% human serum albumin
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[PMID: 19307114] |
RS-127445 is found to has nanomolar affinity for the 5-HT2B receptor (pKi=9.5±0.1) and 1,000 fold selectivity for this receptor as compared to numerous other receptor and ion channel binding sites. RS-127445 potently displaces [3H]-5-HT from human recombinant 5-HT2B receptors expressed in CHO-K1 cells. The affinity (pKi value) of RS-127445 for the 5-HT2B receptor is 9.5±0.1 (n=9). RS-127445 is selective for the 5-HT2B receptor, having approximately 1000 fold lower affinity for the human recombinant 5-HT2A, 5-HT2C, 5-HT5, 5-HT6 and 5-HT7 receptors, a 5-HT1A receptor in rat brain membranes, a 5-HT1B/D receptor in bovine caudate, and a monoamine uptake site in rabbit platelets. RS-127445 potently blocks the 5-HT (10 nM) evoked increases in intracellular calcium concentrations in the HEK-293 cells expressing the 5-HT2B receptor (pIC50 of 10.4±0.1). In cells expressing human recombinant 5-HT2B receptors, RS-127445 potently antagonizes 5-HT-evoked formation of inositol phosphates (pKB=9.5±0.1) and 5-HT-evoked increases in intracellular calcium (pIC10=10.4±0.1). RS-127445 also blocks 5-HT-evoked contraction of rat isolated stomach fundus (pA2B=9.5±1.1) and (±)α-methyl-5-HT-mediated relaxation of the rat jugular vein (pA2=9.9±0.3)[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.
Chemical Information
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CAS No. 199864-87-4
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Appearance Solid
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Molecular Weight 281.33
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Formula C17H16FN3
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Color White to off-white
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SMILES
NC1=NC(C(C)C)=CC(C2=C3C=CC=CC3=C(F)C=C2)=N1
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
4°C, sealed storage, away from moisture
* In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)
Publications (3)
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Journal Impact Factor
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Most Recent
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Adv Sci (Weinh)
Activation of HTR2B Suppresses Osteosarcoma Progression through the STAT1-NLRP3 Inflammasome Pathway and Promotes OASL1+ Macrophage Production to Enhance Antitumor Immunity. [Abstract]2025 May 19:e15276. PMID: 40387572 -
Mol Neurobiol
Htr2b Promotes M1 Microglia Polarization and Neuroinflammation after Spinal Cord Injury via Inhibition of Neuregulin-1/ErbB Signaling. [Abstract]2024 Mar;61(3):1643-1654. PMID: 37747614 -
Solvent & Solubility
DMSO : ≥ 100 mg/mL (355.45 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, 6 months; -20°C, 1 month (sealed storage, away from moisture). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
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, 6 months; -20°C, 1 month (sealed storage, away from moisture). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
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: ≥ 1 mg/mL (3.55 mM); Clear solution
This protocol yields a clear solution of ≥ 1 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (10.0 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.
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. * In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)
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 (277 KB)
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SDS (393 KB)
- English - EN (393 KB)
- Français - FR (393 KB)
- Deutsch - DE (393 KB)
- Norwegian - NO (393 KB)
- Español - ES (393 KB)
- Swedish - SV (393 KB)
- Italian - IT (393 KB)
- Korean - KR (393 KB)
- Portuguese - PT (393 KB)
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Handling Instructions (2659 KB)
References
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, 6 months; -20°C, 1 month (sealed storage, away from moisture). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
| Optional Solvent | Concentration Solvent Mass | 1 mg | 5 mg | 10 mg | 25 mg |
|---|---|---|---|---|---|
| DMSO | 1 mM | 3.5545 mL | 17.7727 mL | 35.5454 mL | 88.8636 mL |
| 5 mM | 0.7109 mL | 3.5545 mL | 7.1091 mL | 17.7727 mL | |
| 10 mM | 0.3555 mL | 1.7773 mL | 3.5545 mL | 8.8864 mL | |
| 15 mM | 0.2370 mL | 1.1848 mL | 2.3697 mL | 5.9242 mL | |
| 20 mM | 0.1777 mL | 0.8886 mL | 1.7773 mL | 4.4432 mL | |
| 25 mM | 0.1422 mL | 0.7109 mL | 1.4218 mL | 3.5545 mL | |
| 30 mM | 0.1185 mL | 0.5924 mL | 1.1848 mL | 2.9621 mL | |
| 40 mM | 0.0889 mL | 0.4443 mL | 0.8886 mL | 2.2216 mL | |
| 50 mM | 0.0711 mL | 0.3555 mL | 0.7109 mL | 1.7773 mL | |
| 60 mM | 0.0592 mL | 0.2962 mL | 0.5924 mL | 1.4811 mL | |
| 80 mM | 0.0444 mL | 0.2222 mL | 0.4443 mL | 1.1108 mL | |
| 100 mM | 0.0355 mL | 0.1777 mL | 0.3555 mL | 0.8886 mL |
RS-127445 Related Classifications
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