U-99194 (maleate)


CAS No. : 234757-41-6

(Synonyms: U-99194A; PNU-99194A (maleate); JPC-211 (maleate))

234757-41-6
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Cat. No. : HY-12701A
M.Wt: 393.47
Formula: C21H31NO6
Purity: >98 %
Solubility: DMSO : 125 mg/mL (ultrasonic);H2O : 20 mg/mL (ultrasonic)
Introduction of 234757-41-6 :

U-99194 (PNU-99194) maleate is a selective, potent dopamine D3 receptor antagonist (Ki =160 nM). U-99194 maleate inhibits the activation of D3 receptor mediated by endogenously released dopamine or exogenous D3 agonists. U-99194 maleate abrogates the IPSC-suppressive effect of the D3 agonist PD 128907 in rat hippocampal slices. U-99194 maleate significantly suppresses Nicotine (HY-127019)-induced tremor in mice. U-99194 maleate can be used for the study of dopamine D3 receptor-mediated motor disorders, particularly kinetic tremors[1][2]. In Vitro:U-99194 (1 μM, 15 min) maleate prevents the cocaine-induced inhibition of monosynaptic inhibitory postsynaptic currents (IPSCs) evoked from stratum radiatum in CA1 pyramidal neurons of rat hippocampal slices[2].
U-99194 (1 μM) maleate blocks the inhibitory effect of PD 128907 ( HY-100539) on the amplitude of monosynaptic IPSCs evoked from stratum radiatum in CA1 pyramidal neurons of rat hippocampal slices[2].
In Vivo:U-99194 (30 mg/kg, i.p., once) maleate significantly suppresses Nicotine (HY-127019)-induced tremor in mice[1].
U-99194 (30 μg/site, intracerebellar microinjection, once) maleate markedly inhibits Nicotine-induced tremor in rats[1].

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