1-boc-4-AP CAS 125541-22-2 fentanyl precursor category 1 table I DEA List I EU Scheduled Precursors INCB Red List
1-boc-4-piperidone CAS 79099-07-3 fentanyl precursor category 1 table I DEA List I EU Scheduled Precursors INCB Red List
4-Anilino-N-phenethylpiperidine (ANPP) CAS 21409-26-7 fentanyl precursor category 1 table I EU Scheduled Precursors INCB Red List UK Drug Precursors
4-Piperidone CAS 41661-47-6 fentanyl precursor category 1 table I DEA List I EU Scheduled Precursors INCB Red List
N-Phenethyl-4-piperidone (NPP) CAS 39742-60-4 fentanyl precursor category 1 table I DEA List I EU Scheduled Precursors INCB Red List
N-Phenyl-4-piperidinamine (4-AP) CAS 23056-29-3 fentanyl precursor category 1 table I DEA List I EU Scheduled Precursors INCB Red List
Norfentanyl CAS 1609-66-1 fentanyl precursor category 1 table I EU Scheduled Precursors INCB Red List UK Drug Precursors