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Fentanyl Precursor Scheduling 2022

The scheduling of three additional fentanyl precursors, N-Phenyl-4-piperidinamine (4-AP), tert-Butyl 4-(phenylamino) piperidine-1-carboxylate (1-boc-4-AP), and norfentanyl, in 2022.

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Feb 5, 2026

What chemical precursors for fentanyl are now under international control and when were they listed?

International controls on have expanded in stages: two long-known precursors were placed under the 1988 Convention in , three more were added by the in March and entered into force on 23 November 2022...