Propylphenidine is a compound which has been sold as a designer drug, first identified in Australia in 2023. It is unclear what kind of activity it has, as it is claimed to be a stimulant in a patent along with related compounds such as phenylpropylaminopentane, but other structurally similar compounds such as ephenidine and isophenidine are dissociativeanesthetic drugs, so it may produce either kind of activity or perhaps a mixture of both.[1][2][3]
^US 5220068, Knoll J, Simay A, Szinnyei E, Somfai E, Torok Z, Mozsolits K, Bergmann J, "Psychostimulant agent", issued 15 June 1993, assigned to Chinoin Private Co Ltd
^Morris H, Wallach J (July–August 2014). "From PCP to MXE: a comprehensive review of the non-medical use of dissociative drugs". Drug Testing and Analysis. 6 (7–8): 614–632. doi:10.1002/dta.1620. PMID24678061.