Schedules of Controlled Substances: Placement of Furanyl Fentanyl, 4- Fluoroisobutyryl Fentanyl, Acryl Fentanyl, Tetrahydrofuranyl fentanyl, and Ocfentanil in Schedule I. Final order.

With the issuance of this final order, the Acting Administrator of the Drug Enforcement Administration maintains the placement of the substances furanyl fentanyl [N-(1- phenethylpiperidin-4-yl)-Nphenylfuran- 2-carboxamide], 4- fluoroisobutyryl fentanyl or parafluoroisobutyryl fentanyl [N-(4- fluorophenyl)-N-(1-phenethylpiperidin- 4-yl)isobutyramide], acryl fentanyl or acryloylfentanyl [N-(1- phenethylpiperidin-4-yl)-Nphenylacrylamide], tetrahydrofuranyl fentanyl [N-(1-phenethylpiperidin-4-yl)- N-phenyltetrahydrofuran-2- carboxamide], and ocfentanil [N-(2- fluorophenyl)-2-methoxy-N-(1- phenethylpiperidin-4-yl)acetamide], including their isomers, esters, ethers, salts, and salts of isomers, esters and ethers, in schedule I of the Controlled Substances Act. This scheduling action discharges the United States obligations under the Single Convention on Narcotic Drugs (1961). This action continues to impose the regulatory controls and administrative, civil, and criminal sanctions applicable to schedule I controlled substances on persons who handle (manufacture, distribute, import, export, engage in research or conduct instructional activities with, or possess), or propose to handle, furanyl fentanyl, 4- fluoroisobutyryl fentanyl, acryl fentanyl, tetrahydrofuranyl fentanyl, and ocfentanil.