NS3861 是烟碱型乙酰胆碱受体的激动剂，对α3β4 nAChR具有高亲和力。能够分别与α3β4 (Ki:0.62 nM)、α3β2 (Ki:25 nM)、α4β4 (Ki:7.8 nM)、α4β2 (Ki:55 nM) 结合。

NS3861 is an agonist of nicotinic acetylcholine receptors (nAChRs) and bind with high affinity to heteromeric α3β4 and α4β2 nAChRs. NS3861 displays the β-subunit preference and a complete lack of activation at α4-containing receptors. The maximal efficacy of NS3861 appeared solely dependent on the nature of the ligand-binding domain. Furthermore, a principal subunit serine to threonine substitution may explain the lack of NS3861 activation at α4-containing receptors.

NS3861 was found to activate wild-type α3β4 nAChRs (Figs. 3R and 4) but did not activate wild-type α4β2. Whereas NS3861 was a partial agonist at α3β4, it proved to be a full agonist at α3β2 albeit with ～10-fold lower potency consistent with the binding affinities. Efficacy at the α3/α4 + β4/β2 receptor was almost identical to that of wild-type α3β4, whereas no efficacy could be seen at α4/α3 + β2/β4[1].

216853-59-7

C12H14BrNS

284.22

NS3861

DMSO:100 mg/mL (351.84 mM)
Powder: -20°C for 3 years
In solvent: -80°C for 2 years