ACT-462206 is a potent and selective dual orexin receptor antagonist (DORA) that inhibits the stimulating effects of the orexin peptides at both the orexin 1 and 2 receptors. It decreases wakefulness and increases non-rapid eye movement (non-REM) and REM sleep while maintaining natural sleep architectures in some animal models while showing anxiolytic-like properties without affecting cognition and motor function in others. Molecular Formula: C20H24N2O4S Molecular Weight: 388.48