961.14(2)(nd)1.1. Acetyl-alpha-methylfentanyl (N-[1-(1-methyl-2- phenylethyl)-4-piperidinyl]-N-phenylacetamide);
961.14(2)(nd)2.2. Acetyl fentanyl (N-(1-phenethylpiperidin-4-yl)-N- phenylacetamide);
961.14(2)(nd)3.3. Acryl fentanyl (N-phenyl-N-[1-(2-phenylethyl)piperidin-4-yl]-2-propenamide);
961.14(2)(nd)3m.3m. Alpha-methyl butyryl fentanyl (2-methyl-N-(1-phenethylpiperidin-4-yl)-N-phenylbutanamide);
961.14(2)(nd)4.4. Alpha-methylfentanyl (N-[1-(1-methyl-2-phenylethyl)-4-piperidinyl]-N-phenylpropanamide);
961.14(2)(nd)5.5. Alpha-methylthiofentanyl (N-{1-[1-methyl-2-(2-thienyl)ethyl]-4-piperidinyl}-N-phenylpropanamide);
961.14(2)(nd)6.6. Beta-hydroxyfentanyl (N-[1-(2-hydroxy-2-phenylethyl)-4-piperidinyl]-N-phenylpropanamide);
961.14(2)(nd)7.7. Beta-hydroxy-3-methylfentanyl (N-[1-(2-hydroxy- 2-phenylethyl)-3-methyl-4-piperidinyl]-N-phenylpropanamide);
961.14(2)(nd)8.8. Beta-hydroxythiofentanyl (N-[1-[2-hydroxy-2-(thiophen-2-yl)ethyl]piperidin-4-yl]-N-phenylpropionamide);
961.14(2)(nd)8m.8m. Beta-methylacetyl fentanyl (N-phenyl-N-(1-(2-phenylpropyl)piperidin-4-yl)acetamide);
961.14(2)(nd)9.9. Butyryl fentanyl (N-(1-phenethylpiperidin-4-yl)-N-phenylbutyramide);
961.14(2)(nd)9m.9m. Crotonyl Fentanyl ((E)-N-(1-phenethylpiperidin-4-yl)-N-phenylbut-2- enamide);
961.14(2)(nd)10.10. Cyclopentyl fentanyl (N-(1-phenethylpiperidin-4-yl)-N-phenylcyclopentanecarboxamide);
961.14(2)(nd)10d.10d. Cyclopropyl fentanyl (N-(1-phenethylpiperidin-4-yl)-N-phenylcyclopropanecarboxamide);
961.14(2)(nd)10m.10m. 2’,5’-dimethoxyfentanyl (N-(1-(2,5-dimethoxyphenethyl)piperidin-4-yl)-N-phenylpropionamide);
961.14(2)(nd)10p.10p. 4-fluorobutyryl fentanyl (N-(4-fluorophenyl)-N-[1-(2-phenylethyl)piperidin-4-yl]-butyramide);
961.14(2)(nd)10t.10t. 4-fluoroisobutyryl fentanyl (N-(4-fluorophenyl)-N-(1-phenethylpiperidin-4-yl)isobutyramide);
961.14(2)(nd)11.11. Furanyl fentanyl (N-phenyl-N-[1-(2-phenylethyl)piperidin-4-yl]furan-2-carboxamide);
961.14(2)(nd)11m.11m. 3-furanyl fentanyl (N-(1-phenethylpiperidin-4-yl)-N-phenylfuran-3-carboxamide);
961.14(2)(nd)12.12. Isobutyryl fentanyl (2-methyl-N-phenyl-N-[1-(2-phenylethyl)piperidin-4-yl]-propanamide);
961.14(2)(nd)12e.12e. Isovaleryl fentanyl (3-methyl-N-(1-phenethylpiperidin-4-yl)-N-phenylbutanamide);
961.14(2)(nd)12m.12m. Meta-fluorofentanyl (N-(3-fluorophenyl)-N-(1-phenethylpiperidin-4-yl)propionamide);
961.14(2)(nd)12p.12p. Meta-fluorofuranyl fentanyl (N-(3-fluorophenyl)-N-(1-phenethylpiperidin-4-yl)furan-2-carboxamide);
961.14(2)(nd)12s.12s. Meta-fluoroisobutyryl fentanyl (N-(3-fluorophenyl)-N-(1-phenethylpiperidin-4-yl)isobutyramide);
961.14(2)(nd)12w.12w. Methoxyacetyl fentanyl (2-methoxy-N-phenyl-N-[1-(2-phenylethyl)piperidin-4-yl]-acetamide);
961.14(2)(nd)12y.12y. 3-methylbutyryl fentanyl (N-[3-methyl-1-(2-phenylethyl)piperidin-4-yl]-N-phenylbutyramide);
961.14(2)(nd)13.13. 4-methoxybutyryl fentanyl (N-(4-methoxyphenyl)-N-(1-phenethylpiperidin-4-yl)butyramide);
961.14(2)(nd)14.14. 3-methylfentanyl (N-[3-methyl-1-(2-phenylethyl)-4- piperidinyl]-N-phenylpropanamide);
961.14(2)(nd)15.15. 3-methylthiofentanyl (N-{3-methyl-1-[2-(2-thienyl)ethyl]-4-piperidinyl}-N-phenylpropanamide);
961.14(2)(nd)16.16. Ocfentanil (N-(2-fluorophenyl)-2-methoxy-N-[1-(2-phenylethyl)piperidin-4-yl]-acetamide);
961.14(2)(nd)16h.16h. Ortho-chlorofentanyl (N-(2-chlorophenyl)-N-(1-phenethylpiperidin-4-yl)propionamide);
961.14(2)(nd)16m.16m. Ortho-fluorofentanyl (N-(2-fluorophenyl)-N-(1-phenethylpiperidin-4-yl)propionamide);
961.14(2)(nd)16n.16n. Ortho-fluorofuranyl fentanyl (N-(2-fluorophenyl)-N-(1-phenethylpiperidin-4-yl)furan-2-carboxamide);
961.14(2)(nd)16q.16q. Ortho-methylcyclopropyl fentanyl (N-(2-methylphenyl)-N-(1-phenethylpiperidin-4-yl)cyclopropanecarboxamide);
961.14(2)(nd)16r.16r. Para-chlorofentanyl (N-(4-chlorophenyl)-N-(1-phenethylpiperidin-4-yl)propionamide;
961.14(2)(nd)16s.16s. Para-chloroisobutyryl fentanyl (N-(4-chlorophenyl)-N-(1-phenethylpiperidin-4-yl)isobutyramide);
961.14(2)(nd)17.17. Para-fluorofentanyl (N-[1-(2-phenylethyl)-4-piperidinyl]-N-(4-fluorophenyl)propanamide);
961.14(2)(nd)17d.17d. Para-fluoro valeryl fentanyl (N-(4-fluorophenyl)-N-(1-phenethylpiperidin-4-yl)pentanamide);
961.14(2)(nd)17g.17g. Para-methoxyfuranyl fentanyl (N-(4-methoxyphenyl)-N-(1-phenethylpiperidin-4-yl)furan-2-carboxamide);
961.14(2)(nd)17r.17r. Para-methylcyclopropyl fentanyl (N-(4-methylphenyl)-N-(1-phenethylpiperidin-4-yl)cyclopropanecarboxamide);
961.14(2)(nd)18.18. Tetrahydrofuran fentanyl (N-(1-phenethylpiperidin-4-yl)-N-phenyltetrahydrofuran-2-carboxamide);
961.14(2)(nd)18m.18m. Tetrahydrothiofuranyl fentanyl (N-(1-phenethylpiperidin-4-yl)-N-phenyltetrahydrothiophen-2-carboxamide);
961.14(2)(nd)19.19. Thiofentanyl (N-{1-[2-(2-thienyl)ethyl]-4-piperidinyl}-N-phenylpropanamide);
961.14(2)(nd)20.20. Valeryl fentanyl (N-phenyl-N-[1-(2-phenylethyl)piperidin-4-yl]pentanamide);
961.14(2)(nd)21.21. N-(1-(2-fluorophenethyl)piperidin-4-yl)-N-(2-fluorophenyl)propionamide (2’-fluoro ortho-fluorofentanyl; 2’-fluoro 2-fluorofentanyl);
961.14(2)(nd)22.22. N-(1-(4-methylphenethyl)piperidin-4-yl)-N-phenylacetamide (4’-methyl acetyl fentanyl);
961.14(2)(nd)23.23. N-(1-phenethylpiperidin-4-yl)-N,3-diphenylpropanamide (β’-phenyl fentanyl; beta’-Phenyl fentanyl; 3-phenylpropanoyl fentanyl);
961.14(2)(nd)24.24. N-phenyl-N-(1-(2-phenylpropyl)piperidin-4-yl)propionamide (β-methyl fentanyl);
961.14(2)(nd)25.25. N-(2-fluorophenyl)-N-(1-phenethylpiperidin-4-yl)butyramide (ortho-fluorobutyryl fentanyl; 2-fluorobutyryl fentanyl);
961.14(2)(nd)26.26. N-(2-methylphenyl)-N-(1-phenethylpiperidin-4-yl)acetamide (ortho-methyl acetylfentanyl; 2-methyl acetylfentanyl);
961.14(2)(nd)27.27. 2-methoxy-N-(2-methylphenyl)-N-(1-phenethylpiperidin-4-yl)acetamide (ortho-methyl methoxyacetylfentanyl; 2-methyl methoxyacetyl fentanyl);
961.14(2)(nd)28.28. N-(4-methylphenyl)-N-(1-phenethylpiperidin-4-yl)propionamide (para-methylfentanyl; 4-methylfentanyl);
961.14(2)(nd)29.29. N-(1-phenethylpiperidin-4-yl)-N-phenylbenzamide (phenyl fentanyl; benzoyl fentanyl);
961.14(2)(nd)30.30. N-(1-phenethylpiperidin-4-yl)-N-phenylthiophene-2-carboxamide (thiofuranyl fentanyl; 2-thiofuranyl fentanyl; thiophene fentanyl).
961.14(2)(nm)(nm) Furethidine;
961.14(2)(p)(p) Hydroxypethidine;
961.14(2)(pm)(pm) Ketobemidone;
961.14(2)(q)(q) Levomoramide;
961.14(2)(qm)(qm) Levophenacylmorphan;
961.14(2)(qz)(qz) 2-methyl AP-237 (1-(2-methyl-4-(3-phenylprop-2-en-1-yl)piperazin-1-yl)butan-1-one);
961.14(2)(r)(r) Morpheridine;
961.14(2)(rg)(rg) MPPP (1-methyl-4-phenyl-4-propionoxypiperidine);
961.14(2)(rk)(rk) MT-45 (1-cyclohexyl-4-(1,2-diphenylethyl)piperazine);
961.14(2)(rm)(rm) Noracymethadol;
961.14(2)(s)(s) Norlevorphanol;
961.14(2)(sm)(sm) Normethadone;
961.14(2)(t)(t) Norpipanone;
961.14(2)(tm)(tm) Phenadoxone;
961.14(2)(u)(u) Phenampromide;
961.14(2)(um)(um) Phenomorphan;
961.14(2)(v)(v) Phenoperidine;
961.14(2)(vg)(vg) PEPAP (1-(2-phenylethyl)-4-phenyl-4-acetoxypiperidine);
961.14(2)(vm)(vm) Piritramide;
961.14(2)(w)(w) Proheptazine;
961.14(2)(wm)(wm) Properidine;
961.14(2)(wn)(wn) Propiram;
961.14(2)(x)(x) Racemoramide;
961.14(2)(xm)(xm) Synthetic Benzimidazole-opioid Substances, specifically including all of the following:
961.14(2)(xm)1.1. Butonitazene (2-(2-(4-butoxybenzyl)-5-nitro-1H-benzimidazol-1-yl)-N,N-diethylethan-1- amine).
961.14(2)(xm)1m.1m. Ethyleneoxynitazene (2-(2-((2,3-dihydrobenzofuran-5-yl)methyl)-5-nitro-1H-benzimidazol-1-yl)-N,N-diethylethan-1-amine).
961.14(2)(xm)2.2. Etodesnitazene also known as Etazene (2-(2-(4-ethoxybenzyl)-1H-benzimidazol-1-yl)-N,N-diethylethan-1- amine).
961.14(2)(xm)3.3. Etonitazene (2-(2-(4-ethoxybenzyl)-5-nitro-1H-benzimidazol-1-yl)-N,N-diethylethan-1- amine).
961.14(2)(xm)4.4. Flunitazene (N,N-diethyl-2-(2-(4-fluorobenzyl)-5- nitro-1H-benzimidazol-1-yl)ethan-1- amine).
961.14(2)(xm)5.5. Isotonitazene (N,N -diethyl-2-(2-(4-isopropoxybenzyl)-5-nitro-1H-benizimidazol-1-yl)ethan-1-amine).
961.14(2)(xm)5m.5m. Methylenedioxynitazene or 3’,4’-methylenedioxynitazene (2-(2-(benzodioxol-5-ylmethyl)-5-nitro-1H-benzimidazol-1-yl)-N,N-diethylethan-1-amine).
961.14(2)(xm)5p.5p. 5-methyl etodesnitazene (2-(2-(4-ethoxybenzyl)-5-methyl-1H-benzimidazol-1-yl)-N,N-diethylethan-1-amine).
961.14(2)(xm)6.6. Metodesnitazene (N,N-diethyl-2-(2-(4- methoxybenzyl)-1H-benzimidazol-1- yl)ethan-1-amine).
961.14(2)(xm)7.7. Metonitazene (N,N-diethyl-2-(2-(4- methoxybenzyl)-5-nitro-1H-benzimidazol-1-yl)ethan-1-amine).
961.14(2)(xm)7b.7b. N-desethyl etonitazene (2-(2-(4-ethoxybenzyl)-5-nitro-1H-benzimidazol-1-yl)-N-ethyethan-1-amine).
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2023-24 Wisconsin Statutes updated through 2025 Wis. Act 47 and through all Supreme Court Orders and Controlled Substances Board Orders filed before and in effect on December 19, 2025. Published and certified under s. 35.18. Changes effective after December 19, 2025, are designated by NOTES. (Published 12-19-25)