SB-649868,380899-24-1

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SB-649868

CAS No. : 380899-24-1

MCE 国际站：SB-649868

产品活性：SB-649868 是一种口服有效的选择性食欲素 OX1 和 OX 2 受体拮抗剂 (作用于 OX1 和 OX2 受体，pK_i 分别为 9.4 和 9.5)。

研究领域：GPCR/G Protein  |  Neuronal Signaling

作用靶点：Orexin Receptor (OX Receptor)

In Vitro: SB-649868 is identified as one the most in vitro potent dual OX₁ and OX₂ receptor antagonist known at that time (pK_i=9.4 and 9.5 at the OX₁ and OX₂ receptor, respectively) . SB-649868 antagonizes orexin-A-induced inositol 1 phosphate (IP1) accumulation with the following pK_B value (OX₁=9.67; OX₂=9.64). SB-649868 displaces the [³H]ACT-078573 receptor binding with the following pKi values: OX₁=9.27; OX₂=8.91. Increasing concentrations of SB-649868 (0.3 nM-30 nM) induces a rightward shift of the orexin-A CRCs with a depression of the agonist efficacy suggesting a clear non-surmountable behavior. The calculated apparent pK_b values are 9.67±0.03 and 9.64±0.07 for OX₁ and OX₂.

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