Protonitazene, also called Propoxynitazene, is a completely new opioid drug, an analgesic from the benzimidazole class. Protonitazene is an isomer of isotonitazene and it has comparable outcomes on the body present in chemical research in rodents. O-DMST is nearly identical to tramadol and is also so named due to absence https://authenticchemicals.com/