4-fluoroisobutyryl fentanyl

Other names: p-fluoroisobutyrfentanyl, N-(4-fluorophenyl)-N-(1-phenethylpiperidin-4-yl)isobutyramide, para-fluoroisobutyryl fentanyl, P-FIBF

Classifications: 6000

Reasons for prohibition: - DEA Controlled Substance List: Schedule I (source)

References:

Reason: Controlled substance: Schedule I

Searchable name: 4-fluoroisobutyryl fentanyl

GUID: 31cd6b25-7d1d-44bf-93d4-7b7b2dd2a10c

Added: 2026-01-01T00:09:47.312568+00:00

Updated: {"_seconds": 1710956178, "_nanoseconds": 938000000}