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Clinical data
Routes of
Oral, intranasal, intravenous, rectal,
Legal status
Legal status
  • 1-(4-Chlorophenyl)-2-(1-pyrrolidinyl)-1-pentanone
CAS Number
PubChem CID
CompTox Dashboard (EPA)
Chemical and physical data
Molar mass265.78 g·mol−1
3D model (JSmol)
  • CCCC(C(=O)c1ccc(cc1)Cl)N2CCCC2
  • InChI=1S/C15H20ClNO/c1-2-5-14(17-10-3-4-11-17)15(18)12-6-8-13(16)9-7-12/h6-9,14H,2-5,10-11H2,1H3

4-Chloro-alpha-pyrrolidinovalerophenone (also known as 4-chloro-alpha-pyrrolidinopentiophenone, 4-chloro-α-PVP, 4Cl-PVP, or 4C-PVP) is an emerging recreational designer drug of the pyrrolidinophenone class, similar in structure to alpha-pyrrolidinopentiophenone (α-PVP).[2] The pharmacology and toxicity of this compound is unknown, though it is presumed to be a stimulant drug.[3]

In the United States, 4-chloro-α-PVP is a Schedule I Controlled Substance.[4]

See also[edit]


  1. ^ "Product Information Insert" (PDF). Cayman Chemical. May 1, 2016. Archived (PDF) from the original on May 7, 2016. Retrieved May 1, 2016.
  2. ^ Lopes BT, Caldeira MJ, Gaspar H, Antunes AM (2020). "Metabolic Profile of Four Selected Cathinones in Microsome Incubations: Identification of Phase I and II Metabolites by Liquid Chromatography High Resolution Mass Spectrometry". Frontiers in Chemistry. 8: 609251. doi:10.3389/fchem.2020.609251. PMC 7835677. PMID 33511100.
  3. ^ "Product Information". Cayman Chemical. May 1, 2016. Archived from the original on May 7, 2016. Retrieved May 1, 2016.
  4. ^ "Schedules of Controlled Substances: Temporary Placement of N-Ethylhexedrone, α-PHP, 4-MEAP, MPHP, PV8, and 4-Chloro-α-PVP in Schedule I". Drug Enforcement Administration. Archived from the original on 2021-04-30. Retrieved 2019-07-29.