Selective mGlu5 positive allosteric modulator (EC50 = 260 nM). Selective for mGlu5 over other mGluR subtypes, as well as 66 other receptors and ion channels. Selectively potentiates mGlu5 signaling via Gαq. Exhibits wake-promoting, antipsychotic-like and cognition-enhancing effects in animal models. Brain penetrant and orally available. Purity 98%. MW (observed): 352.36