Yohimbine Hydrochloride

Name: Yohimbine Hydrochloride
Brand: MedChemExpress
SKU: HY-N0127
Rating: 5.0 (8 reviews)

Cat. No.: HY-N0127 Purity: 99.92%: Data Sheet
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Yohimbine hydrochloride is an alpha-2 renal adenomatase receptor inhibitor, blocking pre- and post-contact alpha-2 renal adenomatase receptors, causing the release of renal adenoma and multiple sclerosis.

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

CAS No. : 65-19-0

Size	Stock	Quantity
Solid + Solvent (Highly Recommended)
10 mM * 1 mL in DMSO ready for reconstitution	In-stock	Estimated Time of Arrival: December 31
Solution
10 mM * 1 mL in DMSO	In-stock	Estimated Time of Arrival: December 31
Solid
500 mg	In-stock	Estimated Time of Arrival: December 31
1 g	In-stock	Estimated Time of Arrival: December 31
5 g	In-stock	Estimated Time of Arrival: December 31
10 g	In-stock	Estimated Time of Arrival: December 31
50 g	Get quote

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Customer Review

Based on 8 publication(s) in Google Scholar

Other Forms of Yohimbine Hydrochloride:

Rauwolscine In-stock
Rauwolscine hydrochloride Get quote
Yohimbine Hydrochloride (Standard) Get quote

8 Publications Citing Use of MCE Yohimbine Hydrochloride

In Vivo Efficacy Study

Histological Imaging/Staining

: Yohimbine Hydrochloride purchased from MedChemExpress. Usage Cited in: Nat Commun. 2025 May 16;16(1):4560. [Abstract]; % time, number of episodes, and total duration in each motor state between 1 to 1.5 h after Vehicle, CNO and CNO + Yohembine (10 μM, 200 nl) injection.

: Yohimbine Hydrochloride purchased from MedChemExpress. Usage Cited in: Nat Commun. 2025 May 16;16(1):4560. [Abstract]; Representative traces of EEG signals, % power of EEG waves, and EEG power spectrum between 0.5 and 1.5 h after injection of vehicle, CNO, or CNO+Yohimbine (YOH, 10 μM, 200 nl) into the LH, in freely behaving mice.

: Yohimbine Hydrochloride purchased from MedChemExpress. Usage Cited in: Nat Commun. 2025 May 16;16(1):4560. [Abstract]; Time to LORR in 1.4% isoflurane and RORR and motor score recovery after 20 min anesthesia with 1.4% isoflurane after delivery of Vehicle, CNO and CNO+Yohimbine (YOH, 10 μM, 200 nl) into the LH.

: Yohimbine Hydrochloride purchased from MedChemExpress. Usage Cited in: Eur J Pharmacol. 2023 Dec 15:961:176174. [Abstract]; LV ejection fraction, heart rate, and cardiac output in control rats, and in MI rats in response to electrical stimulation (ES, 3 mA, 15 Hz, 30 s), intradermal injection of yohimbine (YOB, 5 µg/20 µL, an α2AR antagonist) and dexmedetomidine (DEX, 5 µg/20 µL, a potent and selective α2AR agonist that inhibits norepinephrine release from synaptic vesicles) at the sensitized area (PC6) on the forelimb.

: Yohimbine Hydrochloride purchased from MedChemExpress. Usage Cited in: Mol Med Rep. 2020 Jul;22(1):175-184. [Abstract]; Heart hematoxylin and eosin staining. Cell nuclei appeared as blue dominant dots due to CLP-induced inflammation, while normal cell nuclei were navy-blue. Dex treatment reduced inflammatory cells and Yohimbine (YOH, 1 mg/kg) reversed the protective effects of Dex.

: Yohimbine Hydrochloride purchased from MedChemExpress. Usage Cited in: Mol Med Rep. 2020 Jul;22(1):175-184. [Abstract]; Yohimbine (YOH, 1 mg/kg). Changes in the protein expression of iNOS and P53. Sepsis was achieved by CLP. Data are presented as the mean ± SEM. n=6 per group.

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Biological Activity
Purity & Documentation
References
Customer Review

Description

Cellular Effect

Cell Line	Type	Value	Description	References
Sf9	IC₅₀	3.67 nM Compound: Yohimbine Hydrochloride	Displacement of [3H]MK9112 from human recombinant adrenergic alpha2A receptor expressed in insect Sf9 cells after 60 mins Displacement of [3H]MK9112 from human recombinant adrenergic alpha2A receptor expressed in insect Sf9 cells after 60 mins	[PMID: 19788200]

In Vivo

Note:
Please do not refer to only one article to determine the experimental conditions. It is recommended to determine the optimal experimental conditions (animal strain, age, dosage, frequency and cycle, detection time and indicators, etc.) through preliminary experiments before the formal experiment.

Yohimbine Hydrochloride can be used in animal modeling to create hypertension models. Administering yohimbine hydrochloride (0.2 mg/kg, intraperitoneally) to rats 1 hour before stress each day for 14 consecutive days, followed by immersing the rats in cold water, significantly reduces sexual arousal and libido, as evidenced by increased latency and intervals. Reduced mating activity can be confirmed by decreased levels of testosterone, luteinizing hormone (LH), and follicle-stimulating hormone (FSH), along with a decline in testicular cholesterol content in the rats. Treatment with yohimbine significantly enhances sexual arousal and performance and corrects the impact of stress on mating behavior in male rats^[1].

Induction of Hypertension^[1]

Background

The responses to pressor nerve stimulation in the pithed rat are mediated by α_1A-, α_2A- and α_1D-adrenoceptors. Yohimbine (Hydrochloride), in addition to has antagonist actions as an α_2A-adrenoceptor antagonist, has antagonist actions at α_1D- and α_1A-adrenoceptors against pressor responses^[1].

Specific Modeling Methods

Rats: Wistar• male• 2-3 month old• weighing 250-350 g^[1]
Administration: 1 mg/kg• i.v.• a single dose for 5 min^[1]
Rat: SHRs and WKY• male• 20-week-old• weighing 300-350 g^[4]
Administration: 2 mg/kg• i.p.• daily for 2 weeks^[4]

Note

(1) Rats were pithed and ventilated with 100% O2 at a stroke rate of 60 per min and volume of approximately 0.67 mL/100 g. The carotid artery was cannulated for measurement of blood pressure and drugs were injected into the jugular vein^[1].
(2) Yohimbine (Hydrochloride) was dissolved in distilled water and dilutions made up in normal saline (NaCl 0.9%)^[1].
(3) Before administration, animals were housed four per cage with free access to water and standard laboratory rat chow (Purina). The colony room had a temperature of 24±1°C, humidity of 45-55% and light/dark cycle (lights on 07:00-19:00)^[4].

Modeling Indicators

Molecular changes: Yohimbine (Hydrochloride) produced a significant 3-fold shift in pressor potency of Amidephrine (HY-136474) and significantly shifted the pressor responses to phenylephrine^[1].
Blood pressure change: Yohimbine (Hydrochloride) reduced significantly the heart rate in spontaneously hypertensive rats (SHRs)^[4].
Pathological changes: Yohimbine (Hydrochloride) elicited a marked, significant increase in receptor density over the outer strip of the outer medulla^[4].

Correlated Product(s): Methoxy-idazoxan; BMY 7378 (HY-100554); Prazosin (HY-B0193); RS 100329 (HY-116379); ARC 239 (HY-12709); SK&F 86466

Opposite Product(s): Amidephrine (HY-136474); Clonidine (HY-12721)

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.

65-19-0

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 year; -20°C, 6 months (sealed storage, away from moisture)

Solvent & Solubility

In Vitro:

DMSO : 8.75 mg/mL (22.38 mM; ultrasonic and warming and heat to 60°C; 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
10 mM	0.2558 mL	1.2791 mL	2.5582 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 year; -20°C, 6 months (sealed storage, away from moisture). When stored at -80°C, please use it within 1 year. 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)

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

This equation is commonly abbreviated as: C₁V₁ = C₂V₂

Concentration _(start)

Volume _(start)

Concentration _(final)

Volume _(final)

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.
Protocol 3

Add each solvent one by one: 10% DMSO 90% Corn Oil
Solubility: ≥ 2.5 mg/mL (6.40 mM); Clear solution

This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown). If the continuous dosing period exceeds half a month, please choose this protocol carefully.
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 900 μL Corn oil, and mix evenly.

In Vivo Dissolution Calculator

Please enter the basic information of animal experiments:

Dosage

mg/kg

Animal weight
(per animal)

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 year; -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: 99.92%

Select Batch:

Data Sheet (286 KB) SDS (479 KB)

COA (256 KB) LCMS (93 KB)

Handling Instructions (2659 KB)

References

[1]. Docherty JR. Yohimbine antagonises α1A- and α1D-adrenoceptor mediated components in addition to the α2A-adrenoceptor component to pressor responses in the pithed rat. Eur J Pharmacol. 2012 Mar 15;679(1-3):90-4. [Content Brief]

[2]. Damase-Michel C, et al. The effect of yohimbine on sympathetic responsiveness in essential hypertension. Eur J Clin Pharmacol. 1993;44(2):199-201. [Content Brief]

[3]. Musso NR, et al. Yohimbine effects on blood pressure and plasma catecholamines in human hypertension. Am J Hypertens. 1995 Jun;8(6):565-71. [Content Brief]

[4]. Sáiz J, et al. Yohimbine-induced alterations in alpha(2)-adrenoceptors in kidney regions of the spontaneously hypertensive rats: an autoradiographic analysis. Pharmacol Rep. 2008 May-Jun;60(3):391-8. [Content Brief]

[5]. Docherty JR, et al. Yohimbine antagonises α1A- and α1D-adrenoceptor mediated components in addition to the α2A-adrenoceptor component to pressor responses in the pithed rat. Eur J Pharmacol. 2012 Mar 15;679(1-3):90-4. [Content Brief]

Complete Stock Solution Preparation Table

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
H₂O / DMSO	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

* 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.