≥99.0% (HPLC), ≥99%

Laburnin, Ulexine, Sophorine, (1S,9S)-3,11-Diazatricyclo[,8]trideca-5,7-dien-4-one, (1R,5S)-1,2,3,4,5,6-Hexahydro-1,5-methano-8H-pyrido[1,2a][1,5]diazocin-8-one, (−)-Cytisine, Baptitoxin
Empirical Formula (Hill Notation):
Número CAS:
Peso molecular:
Número EC:
Número MDL:
ID de substância PubChem:

Nível de qualidade



≥99.0% (HPLC)

atividade óptica

[α]/D -108±3°, c = 1% in ethanol


218 °C/2 mmHg (lit.)


154-156 °C (lit.)

SMILES string




InChI key


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Descrição geral

Cystine ((1R,5S)-1,2,3,4,5,6-hexahydro-1,5-methano-8H-pyrido[1,2a][1,5]diazocin-8-one) displays classical antidepressant action in various animal models of antidepressant efficacy. Infrared and Raman spectral studies suggest that it has two stable conformers.
Cytisine was found to be more effective than nicotine-replacement therapy in helping smokers to quit smoking. It is an α4 β2 nicotinic receptor partial agonist. It is a plant alkaloid which is commercially extracted for use as a smoking cessation medication. Preparation of nicotine partial agonist cytisine via “in situ” Stille or Suzuki biaryl pyridine coupling has been reported. Cytisine is a competitive partial agonist at α4 subunit-containing nicotinic acetylcholine (nACh) receptors while at homomeric α7-nACh receptors it behaves as a full agonist with a relatively lower potency.


Cystine may be used as nicotine substitute in nicotine addiction therapy.
Cytisine is suitable for use in a study to compare the effects of varenicline and cytisine on ethanol consumption by rats bred for many generations as high ethanol drinkers.


100, 500 mg in glass bottle
Bottomless glass bottle. Contents are inside inserted fused cone.

Ações bioquímicas/fisiológicas

Potent agonist at α3β4 and α7 nicotinic acetylcholine receptors and partial agonist at α4β2 nicotinic acetylcholine receptors.


Skull and crossbones

Palavra indicadora


Frases de perigo


Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral


6.1D - Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

WGK Alemanha


Equipamento de proteção individual

Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges

Certificado de análise

Certificado de origem

Ramón Sotomayor-Zárate et al.
Psychopharmacology, 227(2), 287-298 (2013-01-25)
Neuronal nicotinic acetylcholine receptors (nAChRs) are pharmacological targets that have recently been implicated in the reinforcing effects of many drugs of abuse, including ethanol. Varenicline and cytisine are nAChR partial agonists in clinical use as smoking cessation aids. However, their...
B T O'Neill et al.
Organic letters, 2(26), 4201-4204 (2001-01-11)
[reaction:see text] The nicotine partial agonist cytisine was prepared in five steps featuring an "in situ" Stille or Suzuki biaryl pyridine coupling. Differentiation of the pyridyl rings was accomplished via selective benzylation and then reduction of a pyridinium ring. The...
Y E Slater et al.
Neuropharmacology, 44(4), 503-515 (2003-03-21)
Cytisine (cy) is a potent and competitive partial agonist at alpha4 subunit-containing nicotinic acetylcholine (nACh) receptors while at homomeric alpha7-nACh receptors it behaves as a full agonist with a relatively lower potency. In the present study, we assessed the effects...
Experimental (FT-IR and Raman) and theoretical (DFT) studies on the vibrational dynamics in cytisine.
Gornicka E, et al.
Vibrational Spectroscopy, 36(1), 105-115 (2004)
Michael J Marks et al.
Journal of neurochemistry, 130(2), 185-198 (2014-03-26)
Nicotinic acetylcholine receptors (nAChR) of the α6β2* subtype (where *indicates the possible presence of additional subunits) are prominently expressed on dopaminergic neurons. Because of this, their role in tobacco use and nicotine dependence has received much attention. Previous studies have...
Sigma-Aldrich.com presents an article concerning (+)-Sparteine Surrogate.
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