Didesmethyl cariprazine-d8 is the deuterium labeled Didesmethyl cariprazine (HY-100658). Didesmethyl cariprazine is an orally active, BBB-permeable metabolite of Cariprazine (HY-14763). Didesmethyl cariprazine is a partial agonist at the D2 and D3 receptors, full agonist at the 5-HT1A receptor, and antagonist at the human 5-HT2B receptor (Ki: 1.41 nM (human D2L), 0.056 nM (human D3), 1.7 nM (human 5-HT1A), 0.52 nM (human 5-HT2B)). Didesmethyl cariprazine dose-dependently inhibits the spontaneous activity of rat midbrain dopaminergic neurons.
