Iso-OMPA
Based on 1 Customer Validation
Iso-OMPA (Tetraisopropyl pyrophosphoramide) is a selective inhibitor of the irreversible butyrylcholinesterase (BuChE). Iso-OMPA enhances soman toxicity in rats associated with the inhibition of plasma carboxylesterase (CarbE).
For research use only. We do not sell to patients.
- Purity: 99.9%
- CAS No.: 513-00-8
- Formula: C12H32N4O3P2
- Molecular Weight:342.36
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Storage:Powder -20°C, 3 years , 4°C, 2 years ; In solvent -80°C, 6 months , -20°C, 1 month
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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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Neuronal Signaling Compound Library
HY-L013
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Human Metabolite Library
HY-L123
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Membrane Protein-targeted Compound Library
HY-L149
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Highly Selective Inhibitors Library
HY-L158
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Bioactive Compound Library Max
HY-L181
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MCE Bioactive Compound Library
HY-L001V
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Bioactive Compound Library
HY-L001
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High-Throughput Bioactive Compound Library
HY-L205
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Mass Spectrometry Human Metabolite Library
HY-L215
Biological Activity
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BuChE |
Iso-OMPA has an IC50 of 694.7, 10.56 and 9.84 μM for propionyl thiocholine (PSCh) in the brain, liver, and muscle of Nile shrimp[1].
Iso-OMPA has an IC50 of 12.49 and 11.42 μM, with Ki values of 0.2019 and 0.6612 μM for butyl thiocholine (BSCh) in the liver and muscle of Nile shrimp[1].
Iso-OMPA (100 μM, 30 min) increases the sensitivity of human ex vivo bronchial preparations to acetylcholine[2].
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.
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Animal Model:Mouse and rat[3]
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Dosage:0.6, 1.9 mg/kg; single dose
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Administration:Subcutaneous injection (s.c.)
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Result:Caused rat plasma CarbE activity to be only slightly inhibited by lower doses and significantly inhibited by higher doses. CarbE activity in mice was not inhibited.
Chemical Information
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CAS No. 513-00-8
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Appearance Solid
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Molecular Weight 342.36
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Formula C12H32N4O3P2
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Color White to off-white
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SMILES
O=P(NC(C)C)(NC(C)C)OP(NC(C)C)(NC(C)C)=O
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Synonyms
Tetraisopropyl pyrophosphoramide
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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 6 months -20°C 1 month
Solvent & Solubility
DMSO : 100 mg/mL (292.09 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)
H2O : 10 mg/mL (29.21 mM; Need ultrasonic)
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. 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. 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: ≥ 2.5 mg/mL (7.30 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 (7.30 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 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 (274 KB)
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SDS (420 KB)
- English - EN (420 KB)
- Français - FR (420 KB)
- Deutsch - DE (420 KB)
- Norwegian - NO (420 KB)
- Español - ES (420 KB)
- Swedish - SV (420 KB)
- Italian - IT (420 KB)
- Portuguese - PT (420 KB)
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Handling Instructions (2659 KB)
References
[1]. Rodríguez-Fuentes G, et al. Characterization of cholinesterase activity from different tissues of Nile tilapia (Oreochromis niloticus). Mar Environ Res. 2004 Aug-Dec;58(2-5):505-9. [Content Brief]
[2]. X Norel, et al. Degradation of acetylcholine in human airways: role of butyrylcholinesterase. Br J Pharmacol. 1993 Apr;108(4):914-9. [Content Brief]
[3]. Z Grubic, et al. Iso-OMPA-induced potentiation of soman toxicity in rat correlates with the inhibition of plasma carboxylesterases. Arch Toxicol. 1988;62(5):398-9. [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. 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 | 2.9209 mL | 14.6045 mL | 29.2090 mL | 73.0226 mL |
| 5 mM | 0.5842 mL | 2.9209 mL | 5.8418 mL | 14.6045 mL | |
| 10 mM | 0.2921 mL | 1.4605 mL | 2.9209 mL | 7.3023 mL | |
| 15 mM | 0.1947 mL | 0.9736 mL | 1.9473 mL | 4.8682 mL | |
| 20 mM | 0.1460 mL | 0.7302 mL | 1.4605 mL | 3.6511 mL | |
| 25 mM | 0.1168 mL | 0.5842 mL | 1.1684 mL | 2.9209 mL | |
| DMSO | 30 mM | 0.0974 mL | 0.4868 mL | 0.9736 mL | 2.4341 mL |
| 40 mM | 0.0730 mL | 0.3651 mL | 0.7302 mL | 1.8256 mL | |
| 50 mM | 0.0584 mL | 0.2921 mL | 0.5842 mL | 1.4605 mL | |
| 60 mM | 0.0487 mL | 0.2434 mL | 0.4868 mL | 1.2170 mL | |
| 80 mM | 0.0365 mL | 0.1826 mL | 0.3651 mL | 0.9128 mL | |
| 100 mM | 0.0292 mL | 0.1460 mL | 0.2921 mL | 0.7302 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.
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