N-Pyrrolidino protonitazene, also known as protonitazepyne, is really a artificial opioid.  It's been described as a beige powder or a white colourless or crystalline reliable, and is identified in falsified pharmaceutical opioid tablets. 19 January 2024 根据世界卫生组织（世卫组织）的建议，联合国麻醉药品委员会（