3-HO-PCP (3-hydroxyphencyclidine) is a synthetic dissociative of the arylcyclohexylamine class. The structure of 3-HO-PCP comprises cyclohexane, a six-member saturated ring, and is bonded to two additional rings at R1. One of these rings is a piperidine ring, a nitrogenous six member ring, bonded at its nitrogen group. The other ring is an aromatic phenyl ring, substituted at R3 with a hydroxy group.
3-HO-PCP is a structural analog of PCP and a homolog 3-MeO-PCP.