2. GPCR/G Protein Neuronal Signaling
  3. Adrenergic Receptor
  4. Guanoxabenz hydrochloride

Guanoxabenz hydrochloride  (Synonyms: Hydroxyguanabenz hydrochloride)

Cat. No.: HY-U00123A Purity: 99.72%
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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.

Guanoxabenz hydrochloride Chemical Structure

Guanoxabenz hydrochloride Chemical Structure

CAS No. : 23256-40-8

Size Price Stock Quantity
Solid + Solvent (Highly Recommended)
10 mM * 1 mL in DMSO
ready for reconstitution
 USD 440 In-stock
Solution
10 mM * 1 mL in DMSO USD 440 In-stock
Solid
1 mg USD 160 In-stock
5 mg USD 400 In-stock
10 mg USD 680 In-stock
25 mg USD 1350 In-stock
50 mg USD 2200 In-stock
100 mg USD 3400 In-stock
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Based on 1 publication(s) in Google Scholar

Other Forms of Guanoxabenz hydrochloride:

Guanoxabenz hydrochloride Related Antibodies

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Description

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[1][2][3].

In Vitro

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 hydrochloride Related Antibodies
In Vivo

Guanoxabenz and guanabenz are both known as centrally active antihypertensive drugs. High affinity Guanoxabenz binding is induced in rat brain membranes after addition of NADH or NADPH cofactors. The rat cerebral cortex contains an enzymatic activity that may activate Guanoxabenz leading to formation of a metabolite showing high affinity for alpha 2-adrenoceptors[3].
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.

Animal Model: Rats[4].
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).
Administration: IP.
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.
Molecular Weight

283.54

Formula

C8H9Cl3N4O
CAS No.
Appearance

Solid

Color

Off-white to gray

SMILES

ClC1=C(/C=N/NC(NO)=N)C(Cl)=CC=C1.[H]Cl
Shipping

Room temperature in continental US; may vary elsewhere.
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
In Vitro: 

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)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 3.5268 mL 17.6342 mL 35.2684 mL
5 mM 0.7054 mL 3.5268 mL 7.0537 mL
View the 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.

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Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Mass
=
Concentration
×
Volume
×
Molecular Weight *

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

×
Volume (start)

V1

=
Concentration (final)

C2

×
Volume (final)

V2

In Vivo:

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.

  • Protocol 1

    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.
  • Protocol 2

    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.
In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:

Dosage

mg/kg

Animal weight
(per animal)

g

Dosing volume
(per animal)

μL

Number of animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
%
DMSO +
% 
+
%
Tween-80 +
%
Saline
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
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).
Calculation results:
Working solution concentration: 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)

The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only. If necessary, please contact MedChemExpress (MCE).
Method for preparing in vivo working solution for animal experiments: Take μL DMSO stock solution, add μL . μL , mix evenly, next add μL Tween 80, mix evenly, then add μL Saline.
 If the continuous dosing period exceeds half a month, please choose this protocol carefully.
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

Purity: 99.72%

COA (248 KB) HNMR (218 KB) LCMS (114 KB)

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). 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
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Guanoxabenz hydrochloride Related Classifications

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

Keywords:

Guanoxabenz23256-40-8HydroxyguanabenzAdrenergic ReceptorBeta ReceptorAntihypertensiveCNSEEGa2AInhibitorinhibitorinhibit

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