Metabolite Detection is important to doc drug intake in clinical and forensic settings, and phase I metabolites of isotonitazene and metonitazene are already discovered in authentic conditions of use (Krotulski et al. 2020, 2021). Nevertheless, the focus was on reporting isotonitazene and metonitazene concentrations, and stage II metabolites were not https://chemicalglobe.com/product-tag/protonitazene-for-sale/