Toreforant
Based on 1 Customer Validation
Toreforant is a potent and selective histamine H4 receptor (H4R) antagonist, with a Ki at the human receptor of 8.4 nM.
For research use only. We do not sell to patients.
- Purity: 97.01%
- CAS No.: 952494-46-1
- Formula: C23H32N6
- Molecular Weight:392.54
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Storage:
4°C, sealed storage, away from moisture and light
* In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light)
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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
- Protocol
- Purity & Documentation
- References
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Help & FAQs
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Biological Activity
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H4 receptor 8.4±2.2 nM (IC50) |
In human polymorphonuclear leukocytes, Toreforant inhibits the histamine-induced shape change of human eosinophils and produces a rightward shift in the histamine dose response curves indicating that it is acting as an antagonist of the human H4R in these primary cells. This is not an equilibrium measurement and therefore the calculation of a pA2 is complicated. The pA2 can be estimated using the shift seen the lowest concentration of antagonist. This yields a pA2 of around 7.5 consistent with the results in the transfected system. This assay can also be performed in whole blood and, as for the purified cells, Toreforant is able to inhibit the actions of histamine. The IC50 values are 296 nM and 780 nM when 100 nM and 300 nM histamine are used, respectively[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.
| NCT Number | Sponsor | Condition | Start Date |
Phase
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|---|---|---|---|---|
| NCT01329991 | Plexxikon| | 2011-05 | PHASE1 |
Chemical Information
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CAS No. 952494-46-1
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Appearance Solid
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Molecular Weight 392.54
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Formula C23H32N6
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Color Off-white to light yellow
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SMILES
CN1CCC(CCCNC2=NC=C(C3=NC4=CC(C)=CC(C)=C4N3)C(C)=N2)CC1
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Synonyms
JNJ-38518168
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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 and light
* In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light)
Solvent & Solubility
DMSO : 100 mg/mL (254.75 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)
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 and light). 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 and light). 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: ≥ 2.5 mg/mL (6.37 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 (6.37 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. * In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light)
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
Mice[1]
The ovalbumin mouse asthma model and the collageninduced arthritis model are conducted. Toreforant is dosed orally in 20% hydroxypropyl-β-cyclodextrin. In the collagen-induced arthritis model Toreforant is given orally twice a day starting with the first signs of disease onset around Day 30 and continued for 14 days. CD-1 mice (5 per group) are dosed with vehicle (20% hydroxypropyl-β-cyclodextrin), Toreforant or JNJ 28307474, as a positive control, at 50 mg/kg orally, 60 mins prior to the intra-dermal injection of histamine. Bouts of scratching are recorded over a 20 minute period. In a subsequent experiment mice are orally dosed with Toreforant (100 mg/kg) at 24, 8, 4 and 1 h prior to intra-dermal injection of histamine and similarly monitored. The area at the back of the neck of mice is shaved 24 hours prior to an intra-dermal injection of 20 μL of 100 μg compound 48/80. Both knockout and wild-type mice (five mice per group) are dosed with vehicle, Toreforant (50 mg/kg) or JNJ 28307474 (50 mg/kg), orally, 60 mins prior to the intradermal injection. Bouts of scratching are recorded over a 20 minute period. Terminal (t=80 min) plasma and brain samples are analyzed for drug concentration. Male Sprague-Dawley rats are deeply anesthetized with isoflurane/oxygen inhalational anesthesia [1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Purity & Documentation
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Data Sheet (271 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
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 and light). 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 | 2.5475 mL | 12.7376 mL | 25.4751 mL | 63.6878 mL |
| 5 mM | 0.5095 mL | 2.5475 mL | 5.0950 mL | 12.7376 mL | |
| 10 mM | 0.2548 mL | 1.2738 mL | 2.5475 mL | 6.3688 mL | |
| 15 mM | 0.1698 mL | 0.8492 mL | 1.6983 mL | 4.2459 mL | |
| 20 mM | 0.1274 mL | 0.6369 mL | 1.2738 mL | 3.1844 mL | |
| 25 mM | 0.1019 mL | 0.5095 mL | 1.0190 mL | 2.5475 mL | |
| 30 mM | 0.0849 mL | 0.4246 mL | 0.8492 mL | 2.1229 mL | |
| 40 mM | 0.0637 mL | 0.3184 mL | 0.6369 mL | 1.5922 mL | |
| 50 mM | 0.0510 mL | 0.2548 mL | 0.5095 mL | 1.2738 mL | |
| 60 mM | 0.0425 mL | 0.2123 mL | 0.4246 mL | 1.0615 mL | |
| 80 mM | 0.0318 mL | 0.1592 mL | 0.3184 mL | 0.7961 mL | |
| 100 mM | 0.0255 mL | 0.1274 mL | 0.2548 mL | 0.6369 mL |
Toreforant Related Classifications
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