Moracin O is a 2-arylbenzofuran isolated from the Mori Cortex Radicis. Moracin O exhibits potent in vitro inhibitory activity against hypoxia-inducible factor (HIF-1). Moracin O reduces oxygen-glucose deprivation (OGD)-induced reactive oxygen species (ROS) production. Moracin O has neuroprotective and anti-inflammatory effects.