Idazoxan HCl

Alias: RX-781094A; RX781094A; RX781094; RX 781094A; RX 781094; Idazoxan HCl; RX-781094; Idazoxan hydrochloride
Cat No.:V12840 Purity: ≥98%
Idazoxan HCl (RX781094A; RX-781094 hydrochloride) is a potent and selective α2 adrenergic receptor antagonist, and an antagonist for the imidazoline receptor.
Idazoxan HCl Chemical Structure CAS No.: 79944-56-2
Product category: Adenosine Receptor
This product is for research use only, not for human use. We do not sell to patients.
Size Price Stock Qty
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100mg
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Purity & Quality Control Documentation

Purity: ≥98%

Product Description

Idazoxan HCl (RX781094A; RX-781094 hydrochloride) is a potent and selective α2 adrenergic receptor antagonist, and an antagonist for the imidazoline receptor. Idazoxan has not been brought to market as an antidepressant for the treatment of schizophrenia, although it has been studied for this purpose.

Biological Activity I Assay Protocols (From Reference)
Targets
α adrenergic receptor
ln Vivo
Idazoxan HCl (RX781094A; RX-781094 hydrochloride) is a potent and selective α2 adrenergic receptor antagonist, and an antagonist for the imidazoline receptor. Idazoxan has not been brought to market as an antidepressant for the treatment of schizophrenia, although it has been studied for this purpose.
Animal Protocol
Male CD-COBS rats injected with 1 mg/kg haloperidol
0.16 mg/kg, 0.31 mg/kg, 0.63 mg/kg, 1.25 mg/kg, 2.5 mg/kg, and 5.0 mg/kg
Subcutaneous injection; for 1 hour
References

[1]. The effects of idazoxan and other alpha 2-adrenoceptor antagonists on food and water intake in the rat. Br J Pharmacol . 1991 Sep;104(1):258-62.

[2]. Participation of imidazoline receptors and alpha(2-)-adrenoceptors in the central hypotensive effects of imidazoline-like drugs. Ann N Y Acad Sci. 1999 Jun 21;881:272-8.

These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C11H13CLN2O2
Molecular Weight
240.686
Exact Mass
240.07
Elemental Analysis
C, 54.89; H, 5.44; Cl, 14.73; N, 11.64; O, 13.29
CAS #
79944-56-2
Related CAS #
79944-56-2 (HCl); 79944-58-4
Appearance
Solid powder
SMILES
C1CN=C(N1)C2COC3=CC=CC=C3O2.Cl
InChi Key
MYUBYOVCLMEAOH-UHFFFAOYSA-N
InChi Code
InChI=1S/C11H12N2O2.ClH/c1-2-4-9-8(3-1)14-7-10(15-9)11-12-5-6-13-11;/h1-4,10H,5-7H2,(H,12,13);1H
Chemical Name
2-(2,3-dihydro-1,4-benzodioxin-3-yl)-4,5-dihydro-1H-imidazole;hydrochloride
Synonyms
RX-781094A; RX781094A; RX781094; RX 781094A; RX 781094; Idazoxan HCl; RX-781094; Idazoxan hydrochloride
HS Tariff Code
2934.99.9001
Storage

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Note: Please store this product in a sealed and protected environment, avoid exposure to moisture.
Shipping Condition
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
Solubility Data
Solubility (In Vitro)
DMSO: ~125 mg/mL (~519.3 mM)
H2O: ~100 mg/mL (~415.5 mM)
Solubility (In Vivo)
Solubility in Formulation 1: ≥ 2.08 mg/mL (8.64 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 20.8 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL.
Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution.

Solubility in Formulation 2: ≥ 2.08 mg/mL (8.64 mM) (saturation unknown) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 20.8 mg/mL clear DMSO stock solution to 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly.
Preparation of 20% SBE-β-CD in Saline (4°C,1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution.

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Solubility in Formulation 3: ≥ 2.08 mg/mL (8.64 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 20.8 mg/mL clear DMSO stock solution to 900 μL of corn oil and mix evenly.


Solubility in Formulation 4: 50 mg/mL (207.74 mM) in PBS (add these co-solvents sequentially from left to right, and one by one), clear solution; with ultrasonication.

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 4.1547 mL 20.7736 mL 41.5472 mL
5 mM 0.8309 mL 4.1547 mL 8.3094 mL
10 mM 0.4155 mL 2.0774 mL 4.1547 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.

Calculator

Molarity Calculator allows you to calculate the mass, volume, and/or concentration required for a solution, as detailed below:

  • Calculate the Mass of a compound required to prepare a solution of known volume and concentration
  • Calculate the Volume of solution required to dissolve a compound of known mass to a desired concentration
  • Calculate the Concentration of a solution resulting from a known mass of compound in a specific volume
An example of molarity calculation using the molarity calculator is shown below:
What is the mass of compound required to make a 10 mM stock solution in 5 ml of DMSO given that the molecular weight of the compound is 350.26 g/mol?
  • Enter 350.26 in the Molecular Weight (MW) box
  • Enter 10 in the Concentration box and choose the correct unit (mM)
  • Enter 5 in the Volume box and choose the correct unit (mL)
  • Click the “Calculate” button
  • The answer of 17.513 mg appears in the Mass box. In a similar way, you may calculate the volume and concentration.

Dilution Calculator allows you to calculate how to dilute a stock solution of known concentrations. For example, you may Enter C1, C2 & V2 to calculate V1, as detailed below:

What volume of a given 10 mM stock solution is required to make 25 ml of a 25 μM solution?
Using the equation C1V1 = C2V2, where C1=10 mM, C2=25 μM, V2=25 ml and V1 is the unknown:
  • Enter 10 into the Concentration (Start) box and choose the correct unit (mM)
  • Enter 25 into the Concentration (End) box and select the correct unit (mM)
  • Enter 25 into the Volume (End) box and choose the correct unit (mL)
  • Click the “Calculate” button
  • The answer of 62.5 μL (0.1 ml) appears in the Volume (Start) box
g/mol

Molecular Weight Calculator allows you to calculate the molar mass and elemental composition of a compound, as detailed below:

Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
Instructions to calculate molar mass (molecular weight) of a chemical compound:
  • To calculate molar mass of a chemical compound, please enter the chemical/molecular formula and click the “Calculate’ button.
Definitions of molecular mass, molecular weight, molar mass and molar weight:
  • Molecular mass (or molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)
  • Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.
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Reconstitution Calculator allows you to calculate the volume of solvent required to reconstitute your vial.

  • Enter the mass of the reagent and the desired reconstitution concentration as well as the correct units
  • Click the “Calculate” button
  • The answer appears in the Volume (to add to vial) box
In vivo Formulation Calculator (Clear solution)
Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)
Step 2: Enter in vivo formulation (This is only a calculator, not the exact formulation for a specific product. Please contact us first if there is no in vivo formulation in the solubility section.)
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Calculation results

Working concentration mg/mL;

Method for preparing DMSO stock solution mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.

Method for preparing in vivo formulation:Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O,mix and clarify.

(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
             (2) Be sure to add the solvent(s) in order.

Clinical Trial Information
NCT Number Recruitment interventions Conditions Sponsor/Collaborators Start Date Phases
NCT05727189 Recruiting Drug: TR-01-XRS
Drug: TR-01-XR
Drug: TR-01-IR
Healthy Terran Biosciences Australia
Pty Ltd
February 14, 2023 Phase 1
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