As of October 7, 2026, 5-MAPB is in a legal gray area (sold in practice, exposed to an interpretive ban theory) in Montana. Analog-exposed (Dangerous Drug Analogue folded into Schedule I; MCA 50-32-222(11)). Controlling source: Mont. Code Ann. 50-32-222 - Specific dangerous drugs included in Schedule I (amphetamine class (4)(nn); dangerous drug analogue entry (11)).
Verified October 7, 2026 (manual) · confidence: confirmed50-32-222(11): Dangerous drug analogues. Unless specifically excepted or listed in another schedule, this designation includes any material, compound, mixture, or preparation defined in 50-32-101 as a dangerous drug analogue. 50-32-101(7)(a): Dangerous drug analogue means any material, compound, mixture, or preparation that is structurally related to or chemically derived from any dangerous drug in Schedules I through V ... or that is expressly or impliedly represented to produce or does produce a physiological effect similar to or greater than the effect of a dangerous drug in Schedules I through V.
Among Montana's 4 neighbors, North Dakota and South Dakota are illegal; Idaho and Wyoming are legal.
Open the interactive map · Every compound in Montana
Federal gray area. Unscheduled by name; Schedule I by Federal Analogue Act when intended for human consumption Federal detail
2 instruments on file for this compound's framework in Montana; 3 of 3 citations above are official sources. Each text carries its source and a fingerprint that changes when the law does.
2aaa76f87ec35fee**50-32-222(4) Hallucinogenic substances (header)** — "Unless specifically excepted or listed in another schedule, any material, compound, mixture, or preparation that contains any quantity of the following is a hallucinogenic substance, including salts, isomers, and salts of isomers whenever the existence of those salts, isomers, and salts of isomers is possible within the specific chemical designation: … (dd) psilocybin; (ee) psilocyn, also known as psilocin; …" — MCA 50-32-222(4), https://mca.legmt.gov/bills/mca/title_0500/chapter_0320/part_0020/section_0220/0500-0320-0020-0220.html (official Montana Code Annotated 2025). 4-HO-MET (4-hydroxy-N-methyl-N-ethyltryptamine) does **not** appear anywhere in the enumerated list; the listed 4-/5-substituted tryptamines are bufotenine, 5-MeO-DIPT, 5-MeO-DMT, AMT, AET, DET, DMT — not 4-HO-MET. **50-32-222(5)(a)** — "For the purposes of subsection (4), the term 'isomer' includes the optical, positional, and geometric isomers." — same URL (confirms the schedule's only catch-all reach is isomers, not homologs). **50-32-222(11) Dangerous drug analogues** — "Unless specifically excepted or listed in another schedule, this designation includes any material, compound, mixture, or preparation defined in 50-32-101 as a dangerous drug analogue." — same URL. **50-32-101(7)(a)** — "'Dangerous drug analogue' means any material, compound, mixture, or preparation that is structurally related to or chemically derived from any dangerous drug in Schedules I through V set forth in Title 50, chapter 32, part 2, or that is expressly or impliedly represented to produce or does produce a physiological effect similar to or greater than the effect of a dangerous drug in Schedules I through V." — MCA 50-32-101(7)(a), https://mca.legmt.gov/bills/mca/title_0500/chapter_0320/part_0010/section_0010/0500-0320-0010-0010.html (official MCA 2025).
e7b1283b8435665050-32-222(11) Dangerous drug analogues. Unless specifically excepted or listed in another schedule, this designation includes any material, compound, mixture, or preparation defined in 50-32-101 as a dangerous drug analogue. 50-32-101(7)(a) "Dangerous drug analogue" means any material, compound, mixture, or preparation that is structurally related to or chemically derived from any dangerous drug in Schedules I through V set forth in Title 50, chapter 32, part 2, or that is expressly or impliedly represented to produce or does produce a physiological effect similar to or greater than the effect of a dangerous drug in Schedules I through V. (b) The term does not include any material, compound, mixture, or preparation that is currently listed as a dangerous drug in Schedules I through V set forth in Title 50, chapter 32, part 2, or in an administrative rule, that is approved for use by the United States food and drug administration, or that is otherwise specifically excepted from Title 50, chapter 32, part 2.
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