4-FPD (4-Fluoro-Pentedrone) is a synthetic cathinone stimulant belonging to the broader class of β-keto amphetamine analogs, commonly grouped under novel psychoactive substances (NPS). Structurally related to pentedrone, 4-FPD is distinguished by a fluorine atom at the para (4-) position of the phenyl ring, a modification known to influence stability, lipophilicity, and receptor interactions in substituted cathinones.
Chemically identified as 1-(4-fluorophenyl)-2-(methylamino)pentan-1-one, 4-FPD has primarily been documented in forensic, analytical, and toxicological contexts. Like other cathinones, compounds in this category are generally associated with central nervous system stimulant activity, mediated through interactions with monoamine transporters. However, specific pharmacological and toxicological data on 4-FPD remain limited, and its risk profile has not been comprehensively established in peer-reviewed literature.
4-FPD has appeared in analytical reference standards and early-warning drug monitoring systems, particularly within Europe and international NPS surveillance programs. Due to its classification as a designer substance, legal status varies by jurisdiction, with some countries applying blanket bans on cathinone derivatives.
Authoritative Reference Backlinks
UNODC Early Warning Advisory on NPS
https://www.unodc.org/LSS
NIH / NCATS Chemical Database
https://drugs.ncats.io
European Monitoring Centre for Drugs and Drug Addiction (EMCDDA)
https://www.emcdda.europa.eu
Cayman Chemical – Analytical Reference Standards
https://www.caymanchem.com
NIST & mzCloud Mass Spectral Libraries
https://www.mzcloud.org
