In urine, O-dealkyl and N-deethyl-O-dealkyl metabolites and glucuronides were being predominant. Isotonitazene and metonitazene O-dealkyl metabolites had been a similar molecules and also are probably developed through the metabolization of structural analogues such as etonitazene, protonitazene, or butonitazene, whose only change from isotonitazen

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