NS8593 hydrochloride
Based on 1 publication(s) in Google Scholar
NS8593 hydrochloride is a potent and selective small conductance Ca2+-activated K+ channels (SK channels) inhibitor. NS8593 hydrochloride reversibly inhibits SK3-mediated currents with a Kd value of 77 nM. NS8593 hydrochloride inhibits all the SK1-3 subtypes Ca2+-dependently (Kds of 0.42, 0.60, and 0.73 μM, respectively, at 0.5 μM Ca2+), and does not affect the Ca2+-activated K+ channels of intermediate and large conductance (hIK and hBK channels, respectively).
For research use only. We do not sell to patients.
- Purity: 99.76%
- CAS No.: 875755-24-1
- Formula: C17H18ClN3
- Molecular Weight:299.80
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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)
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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) NS8593 hydrochloride
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Biological Activity
Kd: 0.42 μM (SK1), 0.60 μM (SK2) , and 0.73 μM (SK3)[2]
When tested in excised patches, it is found that the inhibition by NS8593 (compound 14) decreased as the intracellular [Ca2+] is increased and that NS8593 is equipotent when applied from either the intracellular or the extracellular side of the cell membrane. A HEK293 cell transiently transfected with hSK3 channels is inhibited by 80% upon application of 100 nM apamin and by 75% after application of 300 nM NS8593. In contrast, NS8593 inhibits the mutated channel by 45% at 300 nM. NS8593 thus remains active on the apamin-insensitive SK3 channel, although the Kd value of 0.43 μM is 4-fold higher than found for a wild-type hSK3 channel (Kd of 0.10 μM). As the potency of NS8593 is dependent on the degree of SK3 channel activation, the decreased potency could thus reflect an increased apparent Ca2+-sensitivity of the mutated channels. Similar to the whole-cell experiments, the potency of NS8593 is reduced 3-fold from 0.67 μM to 2.2 μM when tested at a Ca2+ concentration of 500 nM[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. 875755-24-1
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Appearance Solid
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Molecular Weight 299.80
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Formula C17H18ClN3
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Color White to off-white
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SMILES
[H]Cl.C1(N[C@@H]2CCCC3=C2C=CC=C3)=NC4=CC=CC=C4N1
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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 (1)
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Journal Impact Factor
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Most Recent
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Adv Sci (Weinh)
Osmotic Tension Asymmetry Drives Electrotactic Migration via PDLIM7-Polarized Microfilament Coordination in Breast Cancer Cells. [Abstract]2025 Dec 22:e15246. PMID: 41431193
Solvent & Solubility
DMSO : 83.33 mg/mL (277.95 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)
H2O : 1 mg/mL (3.34 mM; ultrasonic and warming and heat to 60°C)
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.
* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.
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.
* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.
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 (6.94 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.
Add each solvent one by one: 10% DMSO 90% (20% SBE-β-CD in Saline)
Solubility: ≥ 2.08 mg/mL (6.94 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 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. * 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 (279 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)
- Korean - KR (252 KB)
- Portuguese - PT (252 KB)
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Handling Instructions (2659 KB)
References
[1]. Sørensen US, et al. Synthesis and structure-activity relationship studies of 2-(N-substituted)-aminobenzimidazoles as potent negative gating modulators ofsmall conductance Ca2+-activated K+ channels. J Med Chem. 2008 Dec 11;51(23):7625-34. [Content Brief]
[2]. Strøbaek D, et al. Inhibitory gating modulation of small conductance Ca2+-activated K+ channels by the synthetic compound (R)-N-(benzimidazol-2-yl)-1,2,3,4-tetrahydro-1-naphtylamine (NS8593) reduces afterhyperpolarizing current in hippocampal CA1 neurons. Mol Pharmacol. 2006 Nov;70(5):1771-82. [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, 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 |
|---|---|---|---|---|---|
| H2O / DMSO | 1 mM | 3.3356 mL | 16.6778 mL | 33.3556 mL | 83.3889 mL |
| DMSO | 5 mM | 0.6671 mL | 3.3356 mL | 6.6711 mL | 16.6778 mL |
| 10 mM | 0.3336 mL | 1.6678 mL | 3.3356 mL | 8.3389 mL | |
| 15 mM | 0.2224 mL | 1.1119 mL | 2.2237 mL | 5.5593 mL | |
| 20 mM | 0.1668 mL | 0.8339 mL | 1.6678 mL | 4.1694 mL | |
| 25 mM | 0.1334 mL | 0.6671 mL | 1.3342 mL | 3.3356 mL | |
| 30 mM | 0.1112 mL | 0.5559 mL | 1.1119 mL | 2.7796 mL | |
| 40 mM | 0.0834 mL | 0.4169 mL | 0.8339 mL | 2.0847 mL | |
| 50 mM | 0.0667 mL | 0.3336 mL | 0.6671 mL | 1.6678 mL | |
| 60 mM | 0.0556 mL | 0.2780 mL | 0.5559 mL | 1.3898 mL | |
| 80 mM | 0.0417 mL | 0.2085 mL | 0.4169 mL | 1.0424 mL | |
| 100 mM | 0.0334 mL | 0.1668 mL | 0.3336 mL | 0.8339 mL |
* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.
NS8593 hydrochloride Related Classifications
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