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4-Bromomethcathinone (4-BMC) Revisited: The First Reported Fatal Case and Toxicological Insights
Karolina Nowak1, Paweł Szpot2, Marcin Zawadzki3
1Department of Pharmacology, Faculty of Medicine, University of Opole, 48 Oleska Street, 45052 Opole, Poland.
Metabolites
|July 27, 2026
Summary
This study reports the first fatal intoxication case involving 4-bromomethcathinone (4-BMC), a substance recently resurging in Europe. High concentrations of 4-BMC and 3-chloromethcathinone were detected in post-mortem samples, highlighting the need for increased toxicological monitoring.
Area of Science:
- Forensic Toxicology
- Clinical Toxicology
- Pharmacovigilance
Background:
- 4-bromomethcathinone (4-BMC) has been detected on the illicit drug market since 2011.
- Recent data show a resurgence of 4-BMC availability in Europe, with significant seizures in 2024.
- This paper details the world's first reported fatal intoxication case involving 4-BMC.
Purpose of the Study:
- To document and analyze the first fatal intoxication case involving 4-bromomethcathinone (4-BMC).
- To quantify 4-BMC and co-occurring substances in post-mortem biological samples.
- To emphasize the need for enhanced monitoring of emerging and re-emerging psychoactive substances.
Main Methods:
- Quantitative analysis of 4-BMC in post-mortem blood and urine using Ultra-High Performance Liquid Chromatography coupled with Triple Quadrupole Mass Spectrometry (UHPLC-QqQ-MS/MS).
- Complementary toxicological analyses were performed.
- Screening for other drugs, medications, and new psychoactive substances.
Main Results:
- Detected 4-BMC concentrations of 16,601 ng/mL in blood and over 50,000 ng/mL in urine.
- Identified 3-chloromethcathinone in blood (1.7 ng/mL) and urine (122.2 ng/mL).
- No other xenobiotics were detected besides 4-BMC and 3-chloromethcathinone.
Conclusions:
- This case highlights the potential lethality of 4-BMC and the need for increased vigilance by forensic and clinical toxicologists.
- The re-emergence of 4-BMC underscores the dynamic nature of the illicit drug market and the persistent threat of previously known substances.
- Enhanced monitoring strategies are crucial for public health and safety in response to evolving xenobiotic threats.
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