Schedules of Controlled Substances: Temporary Placement of 4-Fluoroisobutyryl Fentanyl Into Schedule I

The Administrator of the Drug Enforcement Administration is issuing this notice of intent to issue a temporary order to schedule the synthetic opioid, N-(4-fluorophenyl)-N-(1-phenethylpiperidin-4- yl)isobutyramide (4-fluoroisobutyryl fentanyl or para-fluoroisobutyryl fentanyl), into Schedule I pursuant to the temporary scheduling provisions of the Controlled Substances Act. This action is based on a finding by the Administrator that the placement of this synthetic opioid into Schedule I of the Controlled Substances Act is necessary to avoid an imminent hazard to the public safety. When it is issued, the temporary scheduling order will impose the administrative, civil, and criminal sanctions and regulatory controls applicable to Schedule I controlled substances under the Controlled Substances Act on the manufacture, distribution, reverse distribution, possession, importation, exportation, research, and conduct of instructional activities, and chemical analysis of this synthetic opioid.