Cariprazine(RGH188)盐酸盐有抗精神病活性，对D3和D2受体有较高亲和力，Ki分别为0.09 nM和0.5 nM，对5-HT(1A)受体有一定亲和力。

Cariprazine hydrochloride is a novel antipsychotic drug candidate that exhibits high affinity for the D 3 (K i =0.085 nM) and D 2 (K i =0.49 nM) receptors, and moderate affinity for the 5-HT 1A receptor (K i =2.6 nM).

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D2 Receptor 0.49 nM (Ki) D3 Receptor

Cariprazine stimulates inositol phosphate (IP) formation with a high potency (pEC50 8.5) with relatively low efficacy (Emax 30%). Cariprazine, a novel candidate antipsychotic, demonstrated approximately 10-fold higher affinity for human D3 versus human D2L and human D2S receptors (pKi 10.07, 9.16, and 9.31, respectively). Cariprazine displays high affinity at human serotonin (5-HT) type 2B receptors (pKi 9.24) with pure antagonism. Cariprazine has lower affinity at human and rat hippocampal 5-HT1A receptors (pKi 8.59 and 8.34, respectively) and demonstrates low intrinsic efficacy. Cariprazine displays low affinity at human 5-HT2A receptors (pKi 7.73). Moderate or low affinity for histamine H1 and 5-HT2C receptors (pKi 7.63 an

Administration of Cariprazine (30 μg/kg) reduces the striatal uptake of both radioligands to the level of nonspecific binding compared with baseline PET measurements. Cariprazine has negligible effect on the time-activity curves in the cerebellum. At doses of 5.0 and 30 μg/kg, Cariprazine causes a dose-dependent dopamine D 2 /D 3 receptor occupancy of ~45% and ~80% for both antagonist [C] raclopride and agonist radioligand [C]MNPA. Receptor occupancy of dopamine D 2 /D 3 receptors calculated using the transient equilibrium and the MRTM2 methods ranged from 5% at the lowest dose (1.0 μg/kg) to 94% at the highest dose (300 μg/kg). The effects of 5 doses of Cariprazine (ranging from 0.005 to 0.15 mg/kg) are examined on EPM behavior of wild-type mice. Whereas lower doses of Cariprazine (0.005 to 0.02 mg/kg) do not alter the time spent in open

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4°C, sealed storage, away from moistur In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

[1]. Seneca N, et al. Occupancy of dopamine D2 and D3 and serotonin 5-HT1A receptors by the novel antipsychotic drug candidate, cariprazine (RGH-188), in monkey brain measured using positron emission tomography. Psychopharmacology (Berl). 2011 Dec;218(3):579-8
[2]. Kiss B, et al. Cariprazine (RGH-188), a dopamine D(3) receptor-preferring, D(3)/D(2) dopamine receptor antagonist-partial agonist antipsychotic candidate: in vitro and neurochemical profile. J Pharmacol Exp Ther. 2010 Apr;333(1):328-40.

In Vitro: DMSO : 6.67 mg/mL (14.38 mM; Need ultrasonic)H₂O : 2.86 mg/mL (6.17 mM; ultrasonic and warming and heat to 60°C)配制储备液