Etiracetam
Based on 1 Customer Validation
Etiracetam is a racetam-class nootropic agent. Etiracetam enhances learning and memory in both normal and amnesic rats. Etiracetam can be used in studies related to memory retrieval disorders and amnesic diseases such as Alzheimer's disease.
For research use only. We do not sell to patients.
- Purity: 99.88%
- CAS No.: 33996-58-6
- Formula: C8H14N2O2
- Molecular Weight:170.21
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Storage:Powder -20°C, 3 years , 4°C, 2 years ; In solvent -80°C, 2 years , -20°C, 1 year
To place orders, for customer services and technical support, please contact: MedChemExpress USA
Tel: 609-228-6898 E-mail: [email protected] [email protected]
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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
Biological Activity
Acetylcholine[1].
Etiracetam (1-50 mg/kg; subcutaneous injection; single administration; administered 30 min before memory retention test) improves the passive avoidance performance of Wistar rats with amnesia induced by electroconvulsive shock (ECS)[2].
Etiracetam (50 mg/kg; subcutaneous injection; daily administration; administered 30 minutes prior to daily memory retention/relearning tests on days 2-5) significantly reduces the number of maze errors and running speed, as well as decreases the error count, in amnesic SD rats during the first memory retention test[2].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Animal Model:Wistar (WAG/Ry) (male, 2.5-3 months old, 150-170 g)[1]
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Dosage:25 mg/kg;100 mg/kg; 250 mg/kg; 500 mg/kg
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Administration:i.p.; single dose/4, 10 days 30 min pre-test
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Result:Exhibited no significant effect on measured spontaneous motor behavior parameters including distance run, entries into corner/inner field sections, time spent in inner field, movement speed, respiration rate, small/large movement counts, rearing count, or rearing time.
Did not alter flinch response thresholds to footshock.
Enhanced acquisition of the Y-maze discrimination task.
Significantly improved retention of the passive avoidance task in rats that received footshock.
Enhanced shuttlebox acquisition.
Inhibited extinction of the acquired avoidance behavior.
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Animal Model:Wistar rats (male, 150-200 g)[2]
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Dosage:1 mg/kg; 10 mg/kg; 50 mg/kg
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Administration:s.c.; single dose; 30 minutes pre-retention test
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Result:Showed significantly better passive avoidance performance than saline-treated controls at 50 mg/kg.
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Animal Model:Sprague-Dawley rats (male, 200-250 g at study start, maintained at 85% free-feeding weight via food deprivation)[2]
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Dosage:50 mg/kg
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Administration:s.c.; daily; 2, 5 days, 30 minutes pre-retention/relearning trial each day
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Result:Significantly reduced the number of errors on the first retention trial compared to saline-treated controls in good learners.
Significantly improved maze running speed and reduced errors
Chemical Information
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CAS No. 33996-58-6
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Appearance Solid
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Molecular Weight 170.21
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Formula C8H14N2O2
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Color White to off-white
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SMILES
O=C(N)C(CC)N1C(CCC1)=O
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Synonyms
UCB 6474
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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 : ≥ 125 mg/mL (734.39 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: ≥ 2.08 mg/mL (12.22 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 (12.22 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.
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 (280 KB)
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SDS (537 KB)
- English - EN (537 KB)
- Français - FR (537 KB)
- Deutsch - DE (537 KB)
- Norwegian - NO (537 KB)
- Español - ES (537 KB)
- Swedish - SV (537 KB)
- Italian - IT (537 KB)
- Korean - KR (537 KB)
- Portuguese - PT (537 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 | 5.8751 mL | 29.3755 mL | 58.7510 mL | 146.8774 mL |
| 5 mM | 1.1750 mL | 5.8751 mL | 11.7502 mL | 29.3755 mL | |
| 10 mM | 0.5875 mL | 2.9375 mL | 5.8751 mL | 14.6877 mL | |
| 15 mM | 0.3917 mL | 1.9584 mL | 3.9167 mL | 9.7918 mL | |
| 20 mM | 0.2938 mL | 1.4688 mL | 2.9375 mL | 7.3439 mL | |
| 25 mM | 0.2350 mL | 1.1750 mL | 2.3500 mL | 5.8751 mL | |
| 30 mM | 0.1958 mL | 0.9792 mL | 1.9584 mL | 4.8959 mL | |
| 40 mM | 0.1469 mL | 0.7344 mL | 1.4688 mL | 3.6719 mL | |
| 50 mM | 0.1175 mL | 0.5875 mL | 1.1750 mL | 2.9375 mL | |
| 60 mM | 0.0979 mL | 0.4896 mL | 0.9792 mL | 2.4480 mL | |
| 80 mM | 0.0734 mL | 0.3672 mL | 0.7344 mL | 1.8360 mL | |
| 100 mM | 0.0588 mL | 0.2938 mL | 0.5875 mL | 1.4688 mL |
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