Clobenpropit dihydrobromide
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Clobenpropit dihydrobromide is a potent histamine H3R antagonist/inverse agonist with a pEC50 of 8.07 for histamine H3LR. Clobenpropit dihydrobromide acts as partial agonist at histamine H4 receptors (Ki 13 nM). Clobenpropit dihydrobromide also binds to serotonin 5-HT3 receptors (Ki 7.4 nM) and α2A/α2C adrenoceptors (Ki 17.4/7.8 nM). Clobenpropit dihydrobromide increases apoptosis.
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- Pureté: 99.76%
- CAS No.: 145231-35-2
- Formule: C14H19Br2ClN4S
- Masse moléculaire:470.65
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Stockage:
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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Activité biologique
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Human H3LR 9.44 (pKi) |
Rat H3LR 9.75 (pKi) |
H4 receptor 13 nM (Ki) |
H2 Receptor 5.6 (pKi) |
Clobenpropit binds to human H3LR and rat H3LR with pKis of 9.44±0.04 and 9.75±0.01. Clobenpropit exhibits low affinity for histamine H1R or H2R (pKis of 5.2 and 5.6, respectively)[1].
Clobenpropit inhibits [3H]-dopamine transport by SH-SY5Y cells in a concentration dependent manner with maximum inhibition 82.7±2.8 % and IC50 490 nM (pIC50 6.31±0.11)[2].
Clobenpropit is a subunit-selective noncompetitive antagonist at recombinant NMDA receptors (IC50 1 μM for the NR1/NR2B receptor)[2].
Clobenpropit (50 μM) and Gemcitabine (5 μM) combination therapy significantly increases apoptosis of Panc-1, MiaPCa-2 and AsPC-1 compared with control[3].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Cell Line:Pancreatic cancer cells (Panc-1, MiaPaCa-2 and AsPC-1)
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Concentration:50 μM
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Incubation Time:
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Result:Enhanced apoptotic cell death in combination of Gemcitabine (5 μM).
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Animal Model:Five-week-old male BALB/c nude mice with Panc-1 xenograft[3]
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Dosage:20 μM per kilogram
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Administration:Intraperitoneal injection; every other day for 40 days. Gemcitabine (twice-a-week intraperitoneal injection at 125 mg/kg for 40 d)
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Result:The combination treatment showed significant tumor growth inhibition compared with other treatment groups (control 501±92 mg, Gemcitabine 294±46 mg, Clobenpropit 444±167 mg, and combination 154±54 mg).
Chemical Information
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CAS No. 145231-35-2
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Appearance Solid
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Masse moléculaire 470.65
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Formule C14H19Br2ClN4S
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Color White to off-white
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SMILES
N=C(SCCCC1=CN=CN1)NCC2=CC=C(Cl)C=C2.[H]Br.[H]Br
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Livraison
Room temperature in continental US; may vary elsewhere.
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Stockage
4°C, sealed storage, away from moisture
* In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)
Solvant et solubilité
DMSO : 125 mg/mL (265.59 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). 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). 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: ≥ 2.08 mg/mL (4.42 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 (4.42 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.
Pureté et documentation
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Fiche technique (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)
- Korean - KR (252 KB)
- Portuguese - PT (252 KB)
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Instruction de manipulation (2659 KB)
Références
[1]. Esbenshade TA, et al. Two novel and selective nonimidazole histamine H3 receptor antagonists A-304121 and A-317920: I. In vitro pharmacological effects. J Pharmacol Exp Ther. 2003 Jun;305(3):887-96. [Content Brief]
[2]. Mena-Avila E, et al. Clobenpropit, a histamine H3 receptor antagonist/inverse agonist, inhibits [3H]-dopamine uptake by human neuroblastoma SH-SY5Y cells and rat brain synaptosomes. Pharmacol Rep. 2018 Feb;70(1):146-155. [Content Brief]
[3]. Paik WH, et al. Clobenpropit enhances anti-tumor effect of gemcitabine in pancreatic cancer. World J Gastroenterol. 2014 Jul 14;20(26):8545-57. [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 |
|---|---|---|---|---|---|
| DMSO | 1 mM | 2.1247 mL | 10.6236 mL | 21.2472 mL | 53.1180 mL |
| 5 mM | 0.4249 mL | 2.1247 mL | 4.2494 mL | 10.6236 mL | |
| 10 mM | 0.2125 mL | 1.0624 mL | 2.1247 mL | 5.3118 mL | |
| 15 mM | 0.1416 mL | 0.7082 mL | 1.4165 mL | 3.5412 mL | |
| 20 mM | 0.1062 mL | 0.5312 mL | 1.0624 mL | 2.6559 mL | |
| 25 mM | 0.0850 mL | 0.4249 mL | 0.8499 mL | 2.1247 mL | |
| 30 mM | 0.0708 mL | 0.3541 mL | 0.7082 mL | 1.7706 mL | |
| 40 mM | 0.0531 mL | 0.2656 mL | 0.5312 mL | 1.3280 mL | |
| 50 mM | 0.0425 mL | 0.2125 mL | 0.4249 mL | 1.0624 mL | |
| 60 mM | 0.0354 mL | 0.1771 mL | 0.3541 mL | 0.8853 mL | |
| 80 mM | 0.0266 mL | 0.1328 mL | 0.2656 mL | 0.6640 mL | |
| 100 mM | 0.0212 mL | 0.1062 mL | 0.2125 mL | 0.5312 mL |