2. GPCR/G Protein Neuronal Signaling Immunology/Inflammation
  3. Histamine Receptor
  4. Thioperamide

Thioperamide  (Synonyms: MR-12842)

Cat. No.: HY-12206 Purity: 99.91%
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Thioperamide (MR-12842) is a potent, orally available, brain penetrant and selective H3 receptor antagonist with a Ki of 4.3 nM for inhibition of [3H]histamine release. Thioperamide inhibits [3H]histamine synthesis with a Ki of 31 nM.

For research use only. We do not sell to patients.

Thioperamide Chemical Structure

Thioperamide Chemical Structure

CAS No. : 106243-16-7

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Based on 1 publication(s) in Google Scholar

Thioperamide Related Antibodies

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Description

Thioperamide (MR-12842) is a potent, orally available, brain penetrant and selective H3 receptor antagonist with a Ki of 4.3 nM for inhibition of [3H]histamine release. Thioperamide inhibits [3H]histamine synthesis with a Ki of 31 nM[1].

IC50 & Target[1]

H3 Receptor

 

In Vitro

Thioperamide inhibits [3H]-(R)α-MeHA binding rat brain and guinea-pig lung with Kis of 2.1 nM and 2.0 nM, respectively. Thioperamide competitively blocks H3-autoreceptors regulating [3H]histamine release with a mean apparent Ki of 4 nM[1].
Thioperamide (0.01-100 μM; 24 hours) promotes the viability of NE-4C stem cells in a concentration-dependent manner[2].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Thioperamide Related Antibodies

Cell Viability Assay[2]

Cell Line: NE-4C stem cells
Concentration: 0.01, 0.1, 1, 10, 100 μM
Incubation Time: 24 hours
Result: The viability of NE-4C stem cells increased significantly to 150.83±6.91% when (1 μM) was administrated, and increased to 145.11±14.52% and 132.02%±25.65% when 10 μM and 100 μM were administrated respectively.
In Vivo

Thioperamide (5-20 mg/kg; i.p.) is able to facilitate reconsolidation of a contextually-conditioned fear memory in C57BL/6J mice[3].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Animal Model: Naive female C57BL/6J mice[3]
Dosage: 5, 10 or 20 mg/kg
Administration: Injections (i.p.)
Result: Facilitated reconsolidation of a contextually-conditioned fear memory.
Molecular Weight

292.44

Formula

C15H24N4S
CAS No.
Appearance

Solid

Color

White to off-white

SMILES

S=C(N1CCC(C2=CN=CN2)CC1)NC3CCCCC3
Shipping

Room temperature in continental US; may vary elsewhere.
Storage
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 6 months
-20°C 1 month
Solvent & Solubility
In Vitro: 

DMSO : 100 mg/mL (341.95 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 3.4195 mL 17.0975 mL 34.1950 mL
5 mM 0.6839 mL 3.4195 mL 6.8390 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. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

  • Molarity Calculator

  • Dilution Calculator

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: 2.5 mg/mL (8.55 mM); Clear solution; Need ultrasonic

    This protocol yields a clear solution of 2.5 mg/mL.

    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.
  • Protocol 2

    Add each solvent one by one:  10% DMSO    90% (20% SBE-β-CD in Saline)

    Solubility: 2.5 mg/mL (8.55 mM); Clear solution; Need ultrasonic

    This protocol yields a clear solution of 2.5 mg/mL.

    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.
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).
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
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. 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 3.4195 mL 17.0975 mL 34.1950 mL 85.4876 mL
5 mM 0.6839 mL 3.4195 mL 6.8390 mL 17.0975 mL
10 mM 0.3420 mL 1.7098 mL 3.4195 mL 8.5488 mL
15 mM 0.2280 mL 1.1398 mL 2.2797 mL 5.6992 mL
20 mM 0.1710 mL 0.8549 mL 1.7098 mL 4.2744 mL
25 mM 0.1368 mL 0.6839 mL 1.3678 mL 3.4195 mL
30 mM 0.1140 mL 0.5699 mL 1.1398 mL 2.8496 mL
40 mM 0.0855 mL 0.4274 mL 0.8549 mL 2.1372 mL
50 mM 0.0684 mL 0.3420 mL 0.6839 mL 1.7098 mL
60 mM 0.0570 mL 0.2850 mL 0.5699 mL 1.4248 mL
80 mM 0.0427 mL 0.2137 mL 0.4274 mL 1.0686 mL
100 mM 0.0342 mL 0.1710 mL 0.3420 mL 0.8549 mL
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Thioperamide 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:

Thioperamide106243-16-7MR-12842MR12842MR 12842Histamine ReceptorH3receptorreleasehistaminesynthesisParkinsonInhibitorinhibitorinhibit

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