Skip to content

4-fluoroisobutyryl fentanyl


Previous: 4-fluoro-N-methylcathinone | 🏠 All Substances | 📊 Complete Table | Next: 4-fluoromethylphenidate


OPSS Properties

Classifications6000
DEA ScheduleSchedule I
ReasonControlled substance: Schedule I
Also Known As
  • p-fluoroisobutyrfentanyl
  • N-(4-fluorophenyl)-N-(1-phenethylpiperidin-4-yl)isobutyramide
  • para-fluoroisobutyryl fentanyl
  • P-FIBF
Prohibited BecauseDEA Controlled Substance List: Schedule I (DEA Controlled Substance List: Schedule I)
Added to DatabaseDecember 30, 2025
Source Last UpdatedMarch 20, 2024
GUID31cd6b25-7d1d-44bf-93d4-7b7b2dd2a10c

📊 Complete Table | 🏠 All Substances

Substance 78 of 880