Myosmine, a specific tobacco alkaloid in nuts and nut products, has low affinity for a4b2 nicotinic acetylcholinergic receptors (nAChR) with a K_i of 3300 nM.

Myosmine is easily nitrosated, yielding 4-hydroxy-1-(3-pyridyl)-1-butanone (HPB) and the esophageal tobacco carcinogen N'-nitrosonornicotine.

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

Myosmine (0.001, 0.005, 0.5, and 50 micromol/kg; oral; in Wistar rats) causes a higher percentage of the radioactivity excreted in urine (86.2% and 88.9%) at the two lower doses (0.001 and 0.005 micromol/kg),as compared with the higher doses (0.5 and 50 micromol/kg), where only 77.8% and 75.4% of the dose is found in urine.

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

Myosmine (0.001, 0.005, 0.5, and 50 micromol/kg; oral; in Wistar rats) causes a higher percentage of the radioactivity excreted in urine (86.2% and 88.9%) at the two lower doses (0.001 and 0.005 micromol/kg),as compared with the higher doses (0.5 and 50 micromol/kg), where only 77.8% and 75.4% of the dose is found in urine.

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

• . G Ferretti, er al. Binding of Nicotine and Homoazanicotine Analogues at Neuronal Nicotinic Acetylcholinergic (nACh) Receptors. Bioorg Med Chem Lett. 2003 Feb 24;13(4):733-5.  [Content Brief]

  . Wolfgang Zwickenpflug, et al. Metabolism of Myosmine in Wistar Rats. Drug Metab Dispos. 2005 Nov;33(11):1648-56.  [Content Brief]