2'-Oxo-PCE (also known as as Eticyclidone, and O-PCE) is a lesser-known novel dissociative substance of the arylcyclohexylamine class that produces dissociative, anesthetic, stimulating and hallucinogenic effects when administered. It is structurally related to arylcyclohexylamines like MXE, 3-MeO-PCE, and deschloroketamine and is speculated to produce its effects through its activity as an NMDA receptor antagonist.