Varenicline tartrate

≥98% (HPLC)

Champix, 7,8,9,10-Tetrahydro-6,10-methano-6H-pyrazino[2,3-h][3]benzazepine tartrate
Empirical Formula (Hill Notation):
C13H13N3 · C4H6O6
CAS Number:
Molecular Weight:
MDL number:
PubChem Substance ID:

Quality Level


≥98% (HPLC)






white to beige


DMSO: >5 mg/mL



storage temp.

room temp

SMILES string




InChI key


Related Categories


Varenicline tartrate has been used to investigate its effect on sensorimotor gating in rats under prepulse inhibition (PPI). It is suitable for use as a reference standard in capillary isotachophoresis (ITP) coupled on-line with capillary zone electrophoresis (CZE) for the quantification of varenicline metabolite in urine samples. It is also suitable for use for testing its effect on locomotor and nonlocomotor behavioral deficits in rats.


5, 25 mg in glass bottle

Biochem/physiol Actions

Varenicline tartrate is a partial α4β2 nicotinic receptor agonist and α7 full agonist. Varenicline competitively binds to α4β2 receptors and partially stimulates without creating a full nicotine effect, while simultaneoudly blocking the ability of nicotine to bind to the receptors. Varenicline thus blocks the ability of nicotine to activate α4β2 receptors and stimulate the central nervous mesolimbic dopamine system, believed to be the neuronal mechanism underlying reinforcement and reward experienced upon smoking.

Features and Benefits

This compound is also offered as part of Sigma′s Library of Pharmacologically Active Compounds (LOPAC®1280), a biologically annotated collection of high-quality, ready-to-screen compounds. Click here to learn more.
This compound is also offered as part of Sigma′s Library of Pharmacologically Active Compounds (LOPAC®Pfizer), a collection of 90 Pfizer-developed drugs and research tools. Click here to learn more.

Other Notes

This compound was developed by Pfizer for Neuroscience research. To learn more about Sigma′s partnership with Pfizer and view other authentic, high-quality Pfizer compounds, visit sigma.com/bsm-pfizer.

To browse the list of other pharma-developed compounds and Approved Drugs/Drug Candidates, click here.

Legal Information

Sold for research purposes under agreement from Pfizer Inc.
LOPAC is a registered trademark of Sigma-Aldrich Co. LLC
Pfizer is a registered trademark of Pfizer, Inc.


Exclamation markEnvironment

Signal Word


Hazard Statements


UN 3077 9 / PGIII

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis
Certificate of Origin
Toshiki Kurosawa et al.
Journal of pharmaceutical sciences, 106(9), 2576-2582 (2017-04-30)
Varenicline is a selective partial α
On-line column coupled isotachophoresis-capillary zone electrophoresis hyphenated with tandem mass spectrometry in drug analysis: Varenicline and its metabolite in human urine
Pievstansky J, et al.
Analytica Chimica Acta, 826, 84-93 (2014)
Anne Jackson et al.
Addiction biology, 22(5), 1316-1328 (2016-07-22)
There is recognition that cognitive problems can contribute to renewed drug taking in former addicts. Our previous work has indicated that current smokers show reduced performance on a probabilistic reversal learning (PRL) task, relative to former smokers. To further explore...
Andrea de Bejczy et al.
Alcoholism, clinical and experimental research, 39(11), 2189-2199 (2015-09-29)
Alcohol dependence is a devastating illness affecting a large population, and new pharmacological treatments with good efficacy are greatly needed. One potential candidate is varenicline, a smoking cessation agent with partial agonist action at α4 β2 nicotinic acetylcholine receptors. A...
Helen M Kamens et al.
Brain research bulletin, 138, 20-25 (2017-08-06)
Adolescence is a critical period in brain development that coincides with the initiation of alcohol use. Nicotinic acetylcholine receptors (nAChR) have been shown to modulate ethanol behaviors in adult humans and in animal models; however, the role of these receptors...
Sigma-Aldrich offers many products related to nicotinic acetylcholine receptors for your research needs.
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