Catalog No. size PriceQuantity
M6554-2 2mg solid $100
M6554-10 10mg solid $401



Product Information:

Varenicline (CP 526555) is a potent partial agonist for α4β2 nicotinic acetylcholine receptor (nAChR) with an EC50 value of 2.3 μM. Varenicline is a full agonist for α3β4 and α7 nAChRs with EC50 values of 55 μM and 18 μM, respectively. Varenicline is a nicotinic ligand based on the structure of cytisine, has the potential for smoking cessation treatment.


IC50 & Target

EC50: 2.3 μM (α4β2 nAChR); 18 μM (α7 nAChR); 55 μM (α3β4 nAChR)


Molecular Weight211.26




Smiles Code:




Room temperature in continental US; may vary elsewhere.



Powder     -20°C   3 years

4°C   2 years

In solvent -80°C   6 months

-20°C   1 month



In Vivo

Varenicline (CP 526555) (subcutaneous injection; 0.01, 0.05, 0.1 and 1 mg/kg; 3 days) iven 10 min prior to nicotine, inhibits nicotine CPP in a dose dependent manner. At the doses of 0.1 and 1 mg/kg totally blocks the effect of nicotine in CPP test without inducing significant changes in preferences on their own.

Varenicline (2.5 mg/kg) results in a place aversion that was dependent on α5 nAChRs but not β2 nAChRs.

Varenicline (0.1 and 0.5 mg/kg) reverses nicotine withdrawal signs such as hyperalgesia and somatic signs and withdrawal-induced aversion in a dose-related manner.





  1. Mihalak KB, et al. Varenicline is a partial agonist at alpha4beta2 and a full agonist at alpha7 neuronal nicotinic receptors.Mol Pharmacol. 2006 Sep;70(3):801-5. Epub 2006 Jun 9.


  1. Bagdas D, et al. New insights on the effects of varenicline on nicotine reward, withdrawal and hyperalgesia in mice.Neuropharmacology. 2018 Aug;138:72-79.


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

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