DARK Classics in Chemical Neuroscience: Carfentanil

Abstract

) has recently emerged as a problematic contaminant in other drugs of abuse. Carfentanil and its close analogues, currently approved only for large animal veterinary medicine, have found use both as illicit additives to the clandestine manufacture of scheduled drugs and as chemical weapons. In this Review, the background, synthesis, manufacture, metabolism, pharmacology, approved indications, dosage, and adverse effects of carfentanil will be discussed along with its emergence as a key player in the ongoing opioid crisis.

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