Buy N-Desethylprotonitazene (analgesic) Cas 168310594

N-Desethylprotonitazene is a benzimidazole opioid with potent analgesic effects which has been sold as a designer drug. It was first identified in 2024 as an active metabolite of the closely related compound protonitazene,^[1]^[2] and was found to have less potency than it while still being more potent than fentanyl.^[3]^[4]

It was discovered in a drug sample from Chicago in June 2025.^[3]