N-Pyrrolidino protonitazene, also often called protonitazepyne, is usually a synthetic opioid.  It's been called a beige powder or simply a white colourless or crystalline reliable, and has been determined in falsified pharmaceutical opioid tablets. 19 January 2024 这些建议由世卫组织药物依赖问题专家委员会制定。该委�