Cyamemazine is a neuroleptic agent that contains the phenothiazine chromophore. Cyamemazine is often used as an anxiolytic. Cyamemazine is a potent 5-HT3 (Ki of 12 nM), 5-HT2A (Ki = 1.5 nM) and 5-HT2C (Ki of 75 nM) receptors antagonist with antipsychotic activity.
IC50&Target
5-HT2A Receptor
1.5 nM (Ki)
5-HT2C Receptor
12 nM (Ki)
5-HT3 Receptor
75 nM (Ki)
体外研究
Cyamemazine exhibits a high affinity for dopamine receptors, which is consistent with its antipsychotic activity. The antagonist activity of Cyamemazine at muscarinic receptors is consistent with its affinity for M1 (Ki = 13 nM), M2 (Ki = 42 nM), M3 (Ki = 321 nM), M4 (Ki = 12 nM), and M5 (Ki = 35 nM) receptors.
体内研究
Cyamemazine behaves as an antagonist at the 5-HT3, 5-HT2C, and 5-HT2A receptors in 5-HT3-dependent contraction of isolated guinea pig ileum and bradycardic responses in rats, in 5-HT2C-dependent phospholipase C stimulation in the rat brain membrane, and in 5-HT2A-dependent contraction of isolated rat aorta rings and isolated guinea pig trachea. Cyamemazine antagonizes 5-HT3 and 5-HT2C receptors and that this effect is partially involved in its therapeutic activity in anxiety disorders. Acute administration of low doses of Cyamemazine can reduces extracellular dopamine and metabolite concentrations in rat striatum.
分子式
C19H21N3S
分子量
323.46
CAS号
3546-03-0
运输条件
Room temperature in continental US; may vary elsewhere.