Yohimbine

Yohimbine is a potent and relatively nonselective alpha 2-adrenergic receptor (AR) antagonist, with IC50 of 0.6 μM. IC50 value: 0.6 uM Target: alpha 2-adrenergic receptor in vitro: Yohimbine inhibits alpha2-receptor antagonist with Ki of 1.05 nM, 1.19 nM, and 1.19 nM for α2A, α2B, α2C, respectively. Yohimbine also inhibits 5-HT1B with Ki of 19.9 nM. Yohimbine acts to block the lowering of cAMP by alpha-2 adrenoceptor agonists. yohimbine actually causes a pronounced lowering of tyrosinase activity. in vivo: Yohimbine is an antagonist at alpha2-noradrenaline receptors with putative panicogenic effects in human subjects, was administered to Swiss-Webster mice at doses of 0.5, 1.0, and 2.0 mg/kg. Yohimbine potentiates active defensive responses to threatening stimuli in Swiss-Webster mice.

Product information

CAS Number: 146-48-5

Molecular Weight: 354.44

Formula: C21H26N2O3

Chemical Name: methyl (1S,15R,18S,19R,20S)-1,15,20-trihydrogenio-18-hydroxy-3,13-diazapentacyclo[11.8.0.0²,¹⁰.0⁴,⁹.0¹⁵,²⁰]henicosa-2(10),4(9),5,7-tetraene-19-carboxylate

Smiles: COC(=O)[C@H]1[C@@H](O)CC[C@H]2CN3CCC4C5C=CC=CC=5NC=4[C@@H]3C[C@@H]21

InChiKey: BLGXFZZNTVWLAY-SCYLSFHTSA-N

InChi: InChI=1S/C21H26N2O3/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/t12-,15-,17-,18-,19+/m0/s1

Technical Data

Appearance: Solid Power

Purity: ≥98% (or refer to the Certificate of Analysis)

Solubility: DMSO : 5 mg/mL (14.11 mM; Need ultrasonic). H2O : 1 mg/mL (2.82 mM; ultrasonic and warming and heat to 80°C).

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis

Storage Condition: Dry, dark and -20 ^oC for 1 year or refer to the Certificate of Analysis.

Shelf Life: ≥12 months if stored properly.

Stock Solution Storage: 0 - 4 ^oC for 1 month or refer to the Certificate of Analysis.

Drug Formulation: To be determined

HS Tariff Code: 382200

References:

1. Saeed SA, et al. Signaling mechanisms mediated by G-protein coupled receptors in human platelets. Acta Pharmacol Sin. 2004 Jul;25(7):887-892.
2. Blanchard RJ, et al. Yohimbine potentiates active defensive responses to threatening stimuli in Swiss-Webster mice. Pharmacol Biochem Behav. 1993 Mar;44(3):673-681.
3. Fuller BB, et al. Downregulation of tyrosinase activity in human melanocyte cell cultures by yohimbine. J Invest Dermatol. 2000 Feb;114(2):268-276.

Products are for research use only. Not for human use.