Protonitazene is classified as a novel opioid of the benzimidazole sub-class and is structurally dissimilar from fentanyl.
Protonitazene (Pronitazene, Propoxynitazene) is a new designer opioid, an analgesic in the benzimidazole class. Protonitazene, isomer of Isotonitazene, has the same effect on the body and has a similar molecular structure. Protonitazene has sedative, analgesic and euphoric effects. Like most opioids, protonitazene can be addictive.