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  4. Yohimbine Hydrochloride

Yohimbine Hydrochloride is an alpha 2-adrenoreceptor antagonist, blocking the pre- and postsynaptic alpha-2 adrenoreceptors and causing an increased release of noradrenaline and dopamine.

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Yohimbine Hydrochloride Chemical Structure

Yohimbine Hydrochloride Chemical Structure

CAS No. : 65-19-0

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Solid + Solvent
10 mM * 1 mL in DMSO
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Customer Review

Based on 10 publication(s) in Google Scholar

Other Forms of Yohimbine Hydrochloride:

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  • Biological Activity

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Description

Yohimbine Hydrochloride is an alpha 2-adrenoreceptor antagonist, blocking the pre- and postsynaptic alpha-2 adrenoreceptors and causing an increased release of noradrenaline and dopamine.

In Vivo

Yohimbine Hydrochloride (0.2 mg/kg, i.p.) was administered to rats 1h before the stress session daily for 14 consecutive days and its effect was assessed. Results of this section revealed that, immersion of rats in cold water significantly decreased sexual arousal and motivation as indicated by increased latencies and intervals. Decreased copulatory activity was confirmed by decreased testosterone, luteinizing hormone (LH) and follicle-stimulating-hormone (FSH) levels as well as decreased cholesterol content in rat testes. Treatment with yohimbine significantly increased the sexual arousal and potency and corrected the effects induced by stress on the mating behavior of male rats[1].

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

Clinical Trial
Molecular Weight

390.90

Formula

C21H27ClN2O3

CAS No.
Appearance

Solid

Color

White to light yellow

SMILES

[H][C@]12C(NC3=C4C=CC=C3)=C4CCN1C[C@@]5(CC[C@H](O)[C@H](C(OC)=O)[C@]5(C2)[H])[H].[H]Cl

Structure Classification
Initial Source
Shipping

Room temperature in continental US; may vary elsewhere.

Storage

4°C, sealed storage, away from moisture

*In solvent : -80°C, 1 years; -20°C, 6 months (sealed storage, away from moisture)

Solvent & Solubility
In Vitro: 

DMSO : 33.33 mg/mL (85.26 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

H2O : 3.33 mg/mL (8.52 mM; Need ultrasonic)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.5582 mL 12.7910 mL 25.5820 mL
5 mM 0.5116 mL 2.5582 mL 5.1164 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, 1 years; -20°C, 6 months (sealed storage, away from moisture). When stored at -80°C, please use it within 1 years. When stored at -20°C, please use it within 6 months.

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

  • 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 (6.40 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).

    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 (6.40 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).

    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).

*In solvent : -80°C, 1 years; -20°C, 6 months (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: 99.89%

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, 1 years; -20°C, 6 months (sealed storage, away from moisture). When stored at -80°C, please use it within 1 years. When stored at -20°C, please use it within 6 months.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
H2O / DMSO 1 mM 2.5582 mL 12.7910 mL 25.5820 mL 63.9550 mL
5 mM 0.5116 mL 2.5582 mL 5.1164 mL 12.7910 mL
DMSO 10 mM 0.2558 mL 1.2791 mL 2.5582 mL 6.3955 mL
15 mM 0.1705 mL 0.8527 mL 1.7055 mL 4.2637 mL
20 mM 0.1279 mL 0.6395 mL 1.2791 mL 3.1977 mL
25 mM 0.1023 mL 0.5116 mL 1.0233 mL 2.5582 mL
30 mM 0.0853 mL 0.4264 mL 0.8527 mL 2.1318 mL
40 mM 0.0640 mL 0.3198 mL 0.6395 mL 1.5989 mL
50 mM 0.0512 mL 0.2558 mL 0.5116 mL 1.2791 mL
60 mM 0.0426 mL 0.2132 mL 0.4264 mL 1.0659 mL
80 mM 0.0320 mL 0.1599 mL 0.3198 mL 0.7994 mL

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

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Product Name:
Yohimbine Hydrochloride
Cat. No.:
HY-N0127
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