Notes: 1-(1-Phenylcyclohexyl)-4-hydroxypiperidine (Item No. 20563) is an analytical reference standard that is structurally categorized as an arylcyclohexylamine. It is a primary, monohydroxylated metabolite of the NMDA receptor channel blocker, PCP (Item No. ISO60194) that can be detected in hair samples.{25284,32956} 1-(1-Phenylcyclohexyl)-4-hydroxypiperidine is reported to produce one-third the potency of PCP in eliciting PCP-like discriminative stimuli in rat.{31815} This product is intended for research and forensic applications.