Background

The Drug Enforcement Administration has issued a final order that maintains the placement of the substances butyryl fentanyl (N-(1-phenethylpiperidin-4-yl)-N-phenylbutanamide) and U-47700 (3,4-dichloro-N-[2-(dimethylamino)cyclohexyl]-N-methylbenzamide), including their isomers, esters, ethers, salts, and salts of isomers, esters, and ethers, in schedule I of the Controlled Substances Act. This order continues to impose the regulatory controls and administrative, civil, and criminal sanctions applicable to schedule I controlled substances on persons who manufacture, distribute, import, export, engage in research or conduct instructional activities with, or possess these substances.

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