# Schedules of Controlled Substances: Temporary Placement of 4-Fluoroisobutyryl Fentanyl into Schedule I
> **Rule** · Temporary scheduling order. · Published 2017-05-03 · 82 FR 20544
## Document
- **Document number:** 2017-08943
- **Category:** scheduling
- **Type:** Rule
- **Action:** Temporary scheduling order.
- **Citation:** 82 FR 20544
- **Publication date:** 2017-05-03
## Abstract

The Administrator of the Drug Enforcement Administration is issuing this temporary scheduling order to schedule the synthetic opioid, N-(4-fluorophenyl)-N-(1-phenethylpiperidin-4-yl)isobutyramide (4-fluoroisobutyryl fentanyl or para-fluoroisobutyryl fentanyl), and its isomers, esters, ethers, salts and salts of isomers, esters, and ethers, 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 4-fluoroisobutyryl fentanyl into schedule I of the Controlled Substances Act is necessary to avoid an imminent hazard to the public safety. As a result of this order, the regulatory controls and administrative, civil, and criminal sanctions applicable to schedule I controlled substances will be imposed on persons who handle (manufacture, distribute, reverse distribute, import, export, engage in research, conduct instructional activities or chemical analysis, or possess), or propose to handle, 4- fluoroisobutyryl fentanyl.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2017/05/03/2017-08943/schedules-of-controlled-substances-temporary-placement-of-4-fluoroisobutyryl-fentanyl-into-schedule)
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