Guanoxabenz hydrochloride
Based on 1 Customer Validation
Guanoxabenz (Hydroxyguanabenz) hydrochloride is an α2 adrenergic receptor agonist, with a Ki of 4000 nM and the fully activated form 40 nM for an α2A adrenoceptor.
For research use only. We do not sell to patients.
- Purity: 99.72%
- CAS No.: 23256-40-8
- Formula: C8H9Cl3N4O
- Molecular Weight:283.54
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Storage:
4°C, sealed storage, away from moisture
* In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)
All Adrenergic Receptor Isoforms
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Biological Activity
The formation of high-affinity Guanoxabenz binding seems to be inhibited by a series of N-hydroxyguanidine analogs to Guanoxabenz, as well as by a series of metabolic inhibitors that included allopurinol, 1-chloro-2,4-dinitrobenzene, 5,59-dithiobis-(2-nitrobenzoic acid), cibacron blue, phenyl-p-benzoquinone, didox, and trimidox. The formation of Guanoxabenz high-affinity binding is also inhibited in a time- and concentration-dependent fashion by preincubating the membranes with the LW03 N-hydroxyguanidine analogue of Guanoxabenz[1]. The spleen cytosolic fraction mediates the reduction of Guanoxabenz to guanabenz, the latter having an almost 100-fold higher affinity for rat alpha2A-adrenoceptors than Guanoxabenz itself[2].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Guanoxabenz (0.1-3 mg/kg, i.p.) causes a dose-related reduction in locomotor activity; a dose of 1 mg/kg is selected since this induces a pronounced and sustained behavioural hypoactivity[4].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Animal Model:Rats[4].
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Dosage:0.5 mg/kg (RX 781094 or saline vehicle was injected intravenously (tail vein) at the time of peak effect of the agonist (20min for clonidine and 30 min for Guanoxabenz).
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Administration:IP.
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Result:RX 781094 (0.1-1.0 mg/kg, i.v.) produces a rapid (< 5 set) and complete antagonism of the EEG and behavioural effects induced by clonidine and Guanoxabenz.
Chemical Information
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CAS No. 23256-40-8
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Appearance Solid
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Molecular Weight 283.54
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Formula C8H9Cl3N4O
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Color Off-white to gray
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SMILES
ClC1=C(/C=N/NC(NO)=N)C(Cl)=CC=C1.[H]Cl
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Synonyms
Hydroxyguanabenz hydrochloride
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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
* In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)
Solvent & Solubility
DMSO : 83.33 mg/mL (293.89 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 (7.34 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 (7.34 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.
Purity & Documentation
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Data Sheet (275 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
[1]. Uhlén S, et al. Characterization of the enzymatic activity for biphasic competition by guanoxabenz (1-(2,6-dichlorobenzylidene-amino)-3-hydroxyguanidine) at alpha2-adrenoceptors. I. Description of an enzymatic activity in spleen membranes. Biochem Pharmac [Content Brief]
[2]. Dambrova M, et al. Characterization of the enzymatic activity for biphasic competition by guanoxabenz (1-(2,6-dichlorobenzylidene-amino)-3-hydroxyguanidine) at alpha2-adrenoceptors. II. Description of a xanthine-dependent enzymatic activity in spleen cyto [Content Brief]
[3]. Dambrova M, et al. Characterization of Guanoxabenz reducing activity in rat brain. Pharmacol Toxicol. 1998 Oct;83(4):158-63. [Content Brief]
[4]. P W Dettmar, et al. Neuropharmacological studies in rodents on the action of RX 781094, a new selective alpha 2-adrenoceptor antagonist. Neuropharmacology. 1983 Jun;22(6):729-37. [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 | 3.5268 mL | 17.6342 mL | 35.2684 mL | 88.1710 mL |
| 5 mM | 0.7054 mL | 3.5268 mL | 7.0537 mL | 17.6342 mL | |
| 10 mM | 0.3527 mL | 1.7634 mL | 3.5268 mL | 8.8171 mL | |
| 15 mM | 0.2351 mL | 1.1756 mL | 2.3512 mL | 5.8781 mL | |
| 20 mM | 0.1763 mL | 0.8817 mL | 1.7634 mL | 4.4085 mL | |
| 25 mM | 0.1411 mL | 0.7054 mL | 1.4107 mL | 3.5268 mL | |
| 30 mM | 0.1176 mL | 0.5878 mL | 1.1756 mL | 2.9390 mL | |
| 40 mM | 0.0882 mL | 0.4409 mL | 0.8817 mL | 2.2043 mL | |
| 50 mM | 0.0705 mL | 0.3527 mL | 0.7054 mL | 1.7634 mL | |
| 60 mM | 0.0588 mL | 0.2939 mL | 0.5878 mL | 1.4695 mL | |
| 80 mM | 0.0441 mL | 0.2204 mL | 0.4409 mL | 1.1021 mL | |
| 100 mM | 0.0353 mL | 0.1763 mL | 0.3527 mL | 0.8817 mL |