In Urine, O-dealkyl and N-deethyl-O-dealkyl metabolites and glucuronides were predominant. Isotonitazene and metonitazene O-dealkyl metabolites ended up the same molecules and are likely produced in the metabolization of structural analogues which include etonitazene, protonitazene, or butonitazene, whose only change from isotonitazene and metonitazene could be the composition of the ... https://chemicalglobe.com/product-tag/metonitazene-for-sale/