NS 1738
Based on 1 Customer Validation
NS 1738 (NSC 213859) is a novel positive allosteric modulator of the α7 nAChR, with respect to positive modulation of α7 nAChR (EC50=3.4 μM in oocyte experiments).
For research use only. We do not sell to patients.
- Purity: 99.79%
- CAS No.: 501684-93-1
- Formula: C14H9Cl2F3N2O2
- Molecular Weight:365.13
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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
- Protocol
- Purity & Documentation
- References
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Help & FAQs
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Biological Activity
EC50: 3.4 μM (α7 nAChR, in oocyte experiments)[1]
NS 1738 acts by increasing the peak amplitude of acetylcholine (ACh)-evoked currents at all concentrations; thus, it increased the maximal efficacy of ACh. Plotting peak current amplitude against the logarithm of the NS 1738 concentration used for preincubation reveals a sigmoidal concentration-response relationship that is well fit by the Hill equation (EC50=3.4 μM). Under similar experimental conditions, NS 1738 shows comparable efficacy and potency at the rat α7 nAChR (EC50=3.9 μM)[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. 501684-93-1
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Appearance Solid
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Molecular Weight 365.13
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Formula C14H9Cl2F3N2O2
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Color White to off-white
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SMILES
O=C(NC1=CC(C(F)(F)F)=CC=C1Cl)NC2=CC(Cl)=CC=C2O
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Synonyms
NSC 213859
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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 (273.88 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 (6.85 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 (6.85 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.
Protocol
Rats[1]
Sprague-Dawley rats are used. Adult (2-4 months; 400-450 g) and juvenile (50-60 g) animals are allowed to acclimate to the test room for 90 to 120 min before starting. After acclimation, adult rats are placed alone in their respective test cages. After a brief habituation period (30 min), they are allowed to interact for 5 min with a juvenile rat (trial; T1). During the interactive trial, the adult exhibits investigative behaviors that include close following, grooming, and/or sniffing of the juvenile for as much as 40 to 50% of the trial duration. The time of the investigative interaction is recorded in seconds. The juvenile rat is then removed, and the adult rats are immediately administered varying doses of NS 1738 (10 and 30 mg/kg NS-1738 i.p.) [prepared in 5% ethanol/95% hydroxypropyl-B-cyclodextrin (34% solution); 2.0 mL/kg i.p. ] or Nicotine (0.1 mg/kg i.p.), and then they are returned to their home cage. A second 5-min interactive trial (T2) is conducted 120 min later in the same test cage, and investigative behavior of the adult rat is again monitored and the time is recorded. Recognition ratios of time spent investing the familiar juvenile in T2 divided by time spent investigating the juvenile in T1 are calculated.
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Purity & Documentation
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Data Sheet (274 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
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 | 2.7388 mL | 13.6938 mL | 27.3875 mL | 68.4688 mL |
| 5 mM | 0.5478 mL | 2.7388 mL | 5.4775 mL | 13.6938 mL | |
| 10 mM | 0.2739 mL | 1.3694 mL | 2.7388 mL | 6.8469 mL | |
| 15 mM | 0.1826 mL | 0.9129 mL | 1.8258 mL | 4.5646 mL | |
| 20 mM | 0.1369 mL | 0.6847 mL | 1.3694 mL | 3.4234 mL | |
| 25 mM | 0.1096 mL | 0.5478 mL | 1.0955 mL | 2.7388 mL | |
| 30 mM | 0.0913 mL | 0.4565 mL | 0.9129 mL | 2.2823 mL | |
| 40 mM | 0.0685 mL | 0.3423 mL | 0.6847 mL | 1.7117 mL | |
| 50 mM | 0.0548 mL | 0.2739 mL | 0.5478 mL | 1.3694 mL | |
| 60 mM | 0.0456 mL | 0.2282 mL | 0.4565 mL | 1.1411 mL | |
| 80 mM | 0.0342 mL | 0.1712 mL | 0.3423 mL | 0.8559 mL | |
| 100 mM | 0.0274 mL | 0.1369 mL | 0.2739 mL | 0.6847 mL |
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