1. Membrane Transporter/Ion Channel
    Neuronal Signaling
  2. nAChR

(±)-Epibatidine (Synonyms: CMI 545)

Cat. No.: HY-101078
Handling Instructions

(±)-Epibatidine is a nicotinic agonist. (±)-Epibatidine is a neuronal nAChR agonist.

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

(±)-Epibatidine Chemical Structure

(±)-Epibatidine Chemical Structure

CAS No. : 148152-66-3

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  • Biological Activity

  • Protocol

  • Technical Information

  • Purity & Documentation

  • References


(±)-Epibatidine is a nicotinic agonist. (±)-Epibatidine is a neuronal nAChR agonist.

IC50 & Target


In Vitro

Intracerebroventricular injection of (±)-Epibatidine (0.1 μg) significantly increases intercontraction interval (ICI) but does not change pressure threshold (PT) or maximal voiding pressure (MVP), whereas 1 μg of (±)-Epibatidine increases PT and MVP (P<0.05) and decreased ICI. A low intravenous dose of (±)-Epibatidine (0.001-0.1 μg) has no effect; however, a large dose of (±)-Epibatidine (1 μg) significantly decreases ICI and increases MVP (P<0.05) but does not change PT (P>0.05). (±)-Epibatidine has not only a potent stimulatory effect on nAChR subtypes in the brain (α4β2) but also in sympathetic and parasympathetic ganglia (α3β4) and at the neuromuscular junction (α1β1γδ) [1].

Solvent & Solubility
In Vitro: 

10 mM in DMSO

Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 4.7918 mL 23.9590 mL 47.9180 mL
5 mM 0.9584 mL 4.7918 mL 9.5836 mL
10 mM 0.4792 mL 2.3959 mL 4.7918 mL
*Please refer to the solubility information to select the appropriate solvent.
Animal Administration

Voiding is studied in urethane-anesthetized (1.2 g/kg sc) or awake female Sprague-Dawley rats (250-300 g). In all experiments, control cystometrograms (CMGs) are recorded for ~2 h before intracerebroventricular and intravenous injection of vehicle or (±)-Epibatidine solutions. Dose-response curves are constructed by administering increasing doses of (±)-Epibatidine [0.001-1 μg in 1 μL intracerebroventricularly (icv); 0.001-1 μg in 200 μL iv] at 30-min to 2-h intervals. (±)-Epibatidine is administered ~30 min after vehicle (aCSF, 1 μL icv; or saline solution, 200 μL iv). Chlorisondamine (10 μg, 1 μL icv) is injected 10-30 min before (±)-Epibatidine via the intracerebroventricular route in some experiments to block the effect of the agonist. The intravesical pressure to induce micturition (PT), MVP, and intercontraction interval (ICI; the interval between voids or reflex bladder contractions) are measured and converted into percent change from control values[1].

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

Molecular Weight







ClC1=CC=C([[email protected]]2[[email protected]@H](N3)CC[[email protected]@H]3C2)C=N1


Please store the product under the recommended conditions in the Certificate of Analysis.


Room temperature in continental US; may vary elsewhere

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Cat. No.: HY-101078