Fluetonitazene (fluornitrazene, F-etonitazene, 2-fluoroetonitazene) is a benzimidazole derivative which is an opioid designer drug. It was patented in 2024 as a potential novel analgesic, but appeared on the illicit market at around the same time, first being identified in Germany in March 2024. It is a potent opioid agonist in vitro with similar potency to N-Desethyletonitazene.
See also Fluetonitazepyne Isotonitazene Protonitazene N-Desethylfluornitrazene (DFNZ) List of benzimidazole opioids
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