|Chemical and physical data|
|Molar mass||245.366 g·mol−1|
|3D model (JSmol)|
α-PHiP (also known as α-PiHP), is a stimulant drug of the cathinone class that has been sold online as a designer drug. It is a positional isomer of pyrovalerone, with the methyl group shifted from the 4-position of the aromatic ring to the 4-position of the acyl chain. In a classic 2006 study of pyrrolidinyl cathinone derivatives by Meltzer et al. at Organix, the alpha-isobutyl derivative of pyrovalerone, O-2494, was found to have the highest potency in vitro as an inhibitor of the dopamine transporter of the alpha substituted derivatives tested, however it was not until ten years later in July 2016 that α-PHiP was first identified as a designer drug, when it was reported to the EMCDDA by a forensic laboratory in Slovenia.
- Meltzer PC, Butler D, Deschamps JR, Madras BK (February 2006). "1-(4-Methylphenyl)-2-pyrrolidin-1-yl-pentan-1-one (Pyrovalerone) analogues: a promising class of monoamine uptake inhibitors". Journal of Medicinal Chemistry. 49 (4): 1420–32. doi:10.1021/jm050797a. PMC 2602954. PMID 16480278.
- "Analytic Report alpha-PHiP (C16H23NO) 4-methyl-1-phenyl-2-(pyrrolidin-1-yl)pentan-1-one" (PDF). Slovenia: Nacionalni forenzični laboratorij. July 2016. Archived (PDF) from the original on 2020-10-03. Retrieved 2019-10-24.
- "Europol 2016 Annual Report on the implementation of Council Decision 2005/387/JHA" (PDF). EMCDDA–Europol Joint Publication. Archived (PDF) from the original on 2021-01-26. Retrieved 2019-10-24.
- Liu C, Jia W, Li T, Hua Z, Qian Z (August 2017). "Identification and analytical characterization of nine synthetic cathinone derivatives N-ethylhexedrone, 4-Cl-pentedrone, 4-Cl-α-EAPP, propylone, N-ethylnorpentylone, 6-MeO-bk-MDMA, α-PiHP, 4-Cl-α-PHP, and 4-F-α-PHP". Drug Testing and Analysis. 9 (8): 1162–1171. doi:10.1002/dta.2136. PMID 27863142.