Yohimbine HCl

Alias: Antagonil; Yohimbine; Yohimbin; Corynine; Quebrachin; Quebrachine; Yohimex; Yocon; APHRODINE; (+)-Yohimbine; Aphrodyne; Aphrosol; Johimbin; Yohimbic acid methyl ester; Actibine; Thybine; Yohimar; Yovital; Yoman; Dayto himbin
Cat No.:V1127 Purity: = 99.24%
Yohimbine HCl (Antagonil; Corynine; Quebrachin; Quebrachine; Yohimex; Yocon; APHRODINE; Aphrodyne; Aphrosol; Johimbin),the hydrochloride salt ofYohimbine, is a potent alpha 2-adrenoreceptor antagonist used as a mydriatic for the treatment of impotence.
Yohimbine HCl Chemical Structure CAS No.: 65-19-0
Product category: Adrenergic Receptor
This product is for research use only, not for human use. We do not sell to patients.
Size Price Stock Qty
500mg
1g
2g
5g
10g
Other Sizes

Other Forms of Yohimbine HCl:

  • Rauwolscine hydrochloride
  • Yohimbine
  • Rauwolscine (α-Yohimbine; Corynanthidine; Isoyohimbine)
Official Supplier of:
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Top Publications Citing lnvivochem Products
InvivoChem's Yohimbine HCl has been cited by 1 publication
Purity & Quality Control Documentation

Purity: = 99.24%

Purity: ≥ 98%

Product Description

Yohimbine HCl (Antagonil; Corynine; Quebrachin; Quebrachine; Yohimex; Yocon; APHRODINE; Aphrodyne; Aphrosol; Johimbin), the hydrochloride salt of Yohimbine, is a potent alpha 2-adrenoreceptor antagonist used as a mydriatic for the treatment of impotence. It is an indole alkaloid derived from the bark of the Pausinystalia yohimbe tree in Central Africa. Yohimbine is also alleged to be an aphrodisiac. Yohimbine may exert its beneficial effect on erectile ability through blockade of central alpha 2-adrenergic receptors producing an increase in sympathetic drive secondary to an increase in norepinephrine release and in firing rate of cells in the brain noradrenergic nuclei.

Biological Activity I Assay Protocols (From Reference)
Targets
alpha 2-adrenergic receptor
ln Vitro

In vitro activity: Yohimbine(Antagonil) has been used to treat impotence and as a mydriatic.[1] It's also said to have aphrodisiac properties. A pre-synaptic alpha 2-adrenergic blocking agent is yohimbine. Yohimbine may improve erectile function by blocking central alpha 2-adrenergic receptors, which raises sympathetic drive and, as a result, norepinephrine release and the rate at which noradrenergic nuclei in the brain fire.[2]

ln Vivo
Yohimbine Hydrochloride (0.2 mg/kg, i.p.) was given daily to rats one hour prior to the stress session for a period of fourteen days, during which the impact was evaluated. As demonstrated by increased latencies and intervals, the results of this section showed that rats' immersion in cold water significantly reduced their level of sexual arousal and motivation. Reduced levels of testosterone, luteinizing hormone (LH), and follicle-stimulating hormone (FSH), along with a decrease in cholesterol content in the rat testes, all indicated decreased copulatory activity. Male rats treated with yohimbine showed a significant increase in sexual arousal and potency, as well as a correction of the effects of stress on mating behavior.
Animal Protocol
0.2 mg/kg, i.p.
Rats
References

[1]. J Urol . 1998 Feb;159(2):433-6.

[2]. J Neurosci . 2006 Nov 1;26(44):11442-53.

[3]. J Chem Ecol, 1998, 24(11), 1881-1937.

These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C21H26N2O3.HCL
Molecular Weight
390.9
Exact Mass
390.17
CAS #
65-19-0
Related CAS #
Rauwolscine hydrochloride; 6211-32-1; Yohimbine; 146-48-5; Rauwolscine; 131-03-3
Appearance
Powder
SMILES
COC(=O)[C@H]1[C@H](CC[C@@H]2[C@@H]1C[C@H]3C4=C(CCN3C2)C5=CC=CC=C5N4)O.Cl
InChi Key
PIPZGJSEDRMUAW-VJDCAHTMSA-N
InChi Code
InChI=1S/C21H26N2O3.ClH/c1-26-21(25)19-15-10-17-20-14(13-4-2-3-5-16(13)22-20)8-9-23(17)11-12(15)6-7-18(19)24;/h2-5,12,15,17-19,22,24H,6-11H2,1H3;1H/t12-,15-,17-,18-,19+;/m0./s1
Chemical Name
methyl (1S,15R,18S,19R,20S)-18-hydroxy-1,3,11,12,14,15,16,17,18,19,20,21-dodecahydroyohimban-19-carboxylate;hydrochloride
Synonyms
Antagonil; Yohimbine; Yohimbin; Corynine; Quebrachin; Quebrachine; Yohimex; Yocon; APHRODINE; (+)-Yohimbine; Aphrodyne; Aphrosol; Johimbin; Yohimbic acid methyl ester; Actibine; Thybine; Yohimar; Yovital; Yoman; Dayto himbin
Storage

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

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: 12~33.3 mg/mL (30.7~85.3 mM)
Water: <1 mg/mL
Ethanol: <1 mg/mL
Solubility (In Vivo)
Solubility in Formulation 1: ≥ 2.5 mg/mL (6.40 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 25.0 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: ≥ 2.5 mg/mL (6.40 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 25.0 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: ≥ 2.5 mg/mL (6.40 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 25.0 mg/mL clear DMSO stock solution to 900 μL of corn oil and mix evenly.


 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 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

*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:

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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)
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  • 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:
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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.

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  • 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
NCT06018727 Not yet recruiting Dietary Supplement: Yohimbine
Drug: Hydrocortisone
Borderline Personality Disorder University of North Carolina,
Chapel Hill
March 2024 Phase 4
NCT00958880 Completed Drug: Yohimbine Hydrochloride
Drug: Sugar Pill
Social Anxiety Disorder Southern Methodist University March 2009 Phase 3
NCT00078715 Completed Drug: Yohimbine hydrochloride
Drug: Placebo
Depression, Involutional
Major Depresssion
National Institute of Mental
Health (NIMH)
March 2004 Phase 2
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