ArticleDrug testing and analysis2025
In vitro metabolism study of ADB-P-5Br-INACA and ADB-4en-P-5Br-INACA using human hepatocytes, liver microsomes, and in-house synthesized references.
Article in Drug testing and analysis, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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The trial behind it
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Who cites it
5 citing papers in PubMed.
- Physicochemical Characterization and Metabolites Identification of the Synthetic Cannabinoid MDMB-5'Br-PINACA UsingChemical research in toxicology · 2026Article
- Outsmarting generic legislation: 4 years into the cat-and-mouse game of the synthetic cannabinoid receptor agonist market since the Chinese ban in 2021.Archives of toxicology · 2025Review
- Tail-less precursors in synthetic cannabinoid production: investigating a clandestine laboratory, seized samples, and CBArchives of toxicology · 2025Article
- Systematic Characterization of In Vitro and In Vivo Metabolic Pathways and Identification of Novel Biomarkers of 26 Synthetic Cannabinoids.Molecules (Basel, Switzerland) · 2025Article
- In vitro metabolism study of ADB-P-5Br-INACA and ADB-4en-P-5Br-INACA using human hepatocytes, liver microsomes, and in-house synthesized references.Drug testing and analysis · 2025Article
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Authors and funding
7 authors.
Funding
Abstract
Synthetic cannabinoids (SCs) remain a major public health concern, as they continuously are linked to severe intoxications and drug-related deaths worldwide. As new SCs continue to emerge on the illicit drug market, an understanding of SC metabolism is needed to identify formed metabolites that may serve as biomarkers in forensic toxicology screening and for understanding the pharmacokinetics of the drugs. In this work, the metabolism of ADB-4en-P-5Br-INACA and ADB-P-5Br-INACA ((S)-N-(1-amino-3,3-dimethyl-1-oxobutan-2-yl)-5-bromo-1-(pent-4-en-1-yl)-1H-indazole-3-carboxamide, (S)-N-(1-amino-3,3-dimethyl-1-oxobutan-2-yl)-5-bromo-1-pentyl-1H-indazole-3-carboxamide respectively) were investigated using human hepatocytes in vitro and in-house synthesized references. Both SCs were incubated with pooled human hepatocytes over 3 h, with the aim to identify unique and abundant metabolites using liquid chromatography-quadrupole time-of-flight mass spectrometry (LC-QTOF-MS). In total nine metabolites were identified for ADB-4en-P-5Br-INACA and 10 metabolites for ADB-P-5Br-INACA. The observed biotransformations included dihydrodiol formation, terminal amide hydrolysis, hydroxylation, dehydrogenation, carbonyl formation, glucuronidation, and combinations thereof. The major metabolites were confirmed by in-house synthesized references. Recommended biomarkers for ADB-P-5Br-INACA and ADB-4en-P-5Br-INACA are the terminal hydroxy and dihydrodiol metabolite respectively.
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