Diphenidine

Diphenidine (1,2-DEP, DPD, DND) is a dissociative anesthetic that has been sold as a designer drug. Diphenidine was first synthesized in 1924 using a Bruylants reaction similar to the one later employed in the discovery of phencyclidine in 1956. Following the 2013 UK ban on arylcyclohexylamines, diphenidine and the related compound methoxphenidine emerged on the grey market. Anecdotal reports indicate that high doses of diphenidine can produce "bizarre somatosensory phenomena and transient anterograde amnesia."