Metabolite Detection is essential to document drug consumption in clinical and forensic settings, and phase I metabolites of isotonitazene and metonitazene are already recognized in authentic instances of usage (Krotulski et al. 2020, 2021). Even so, the main target was on reporting isotonitazene and metonitazene concentrations, and phase II metabolites https://chemicalglobe.com/product-tag/protonitazene-for-sale-near-me/