MDPEP
{{Short description|Chemical compound}}
{{Infobox drug
| IUPAC_name = 1-(1,3-benzodioxol-5-yl)-2-pyrrolidin-1-ylheptan-1-one
| image = MDPEP_structure.png
| width = 200px
| tradename =
| routes_of_administration =
| legal_UK = Class B
| legal_DE = Anlage II
| CAS_number = 746541-09-3
| CAS_supplemental =
24646-39-7 (HCl)
| UNII_Ref = {{fdacite|correct|FDA}}
| UNII = L6IDR88RVF
| PubChem = 132520294
| ChemSpiderID = 95753889
| C=18 | H=25 | N=1 | O=3
| StdInChI=1S/C18H25NO3/c1-2-3-4-7-15(19-10-5-6-11-19)18(20)14-8-9-16-17(12-14)22-13-21-16/h8-9,12,15H,2-7,10-11,13H2,1H3
| StdInChIKey = APQUWEZHVKBPTI-UHFFFAOYSA-N
| SMILES = CCCCCC(C(=O)C1=CC2=C(C=C1)OCO2)N3CCCC3
}}
MDPEP (also known as MD-PV8 and MDPHPP) is a substituted cathinone derivative with stimulant effects which has been sold as a designer drug. It is the longer chain heptyl homologue of the well known stimulant designer drugs MDPV and MDPHP. It was first identified in Sweden in 2019 and has been relatively widely sold, being the most commonly encountered substituted cathinone derivative found in the US in 2020–2021, though it has still not reached the same levels of use internationally as MDPV and MDPHP.{{cite book | url = https://www.emcdda.europa.eu/system/files/publications/13464/20205648_TD0320796ENN_PDF_rev.pdf | title = New psychoactive substances: global markets, glocal threats and the COVID-19 pandemic. An update from the EU Early Warning System | author = European Monitoring Center for Drugs and Drug Addiction | location = Luxembourg | publisher = Publications Office of the European Union | date = December 2020 | doi = 10.2810/921262| isbn = 9789294975584 }}{{cite journal | vauthors = Axelsson MA, Lövgren H, Kronstrand R, Green H, Bergström MA | title = Retrospective identification of new psychoactive substances in patient samples submitted for clinical drug analysis | journal = Basic & Clinical Pharmacology & Toxicology | volume = 131 | issue = 5 | pages = 420–434 | date = November 2022 | doi = 10.1111/bcpt.13786 | pmid = 36028947 | s2cid = 251865526 | url = http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-188605 }}{{cite journal | vauthors = Kuropka P, Zawadzki M, Szpot P | title = A review of synthetic cathinones emerging in recent years (2019-2022) | journal = Forensic Toxicology | date = 2023 | volume = 41 | issue = 1 | pages = 25–46 | doi = 10.1007/s11419-022-00639-5 | pmid = 36124107 | pmc = 9476408 }}