Irdabisant (CEP-26401) 是一种具有选择性、口服活性和血脑屏障渗透性的组胺 H3 受体 (histamine H3 receptor, H3R) 拮抗剂/逆激动剂，对大鼠 H3R 和人 H3R 的 Ki 分别为 7.2 nM 和 2.0 nM。Irdabisant 对 hERG 电流的抑制活性相对较低，IC50 为 13.8 μM。Irdabisant 在大鼠社会认知模型中具有认知增强和唤醒作用。 Irdabisant (CEP-26401) is a selective, orally active and blood-brain barrier (BBB) penetrant histamine H3 receptor (H3R) inverse agonist/inverse agonist with Ki values of 7.2 nM and 2.0 nM for rat H3R and human H3R, respectively. Irdabisant has relatively low inhibitory activity against hERG current with an IC50 of 13.8 μM. Irdabisant has cognition-enhancing and wake-promoting activities in the rat social recognition model. Irdabisant can be used to research schizophrenia or cognitive impairment