Is Endomorphin-1 Legal in Maine? (2026)

Rule type

permanent

Tier

unscheduled

What the record says

Endomorphin-1 (Tyr-Pro-Trp-Phe-NH2) is not named or scheduled in Maine. The state has no chemical analogue statute; only an imitation / counterfeit / misrepresentation offense that turns on appearance or representation, not on a substance's intrinsic structure or effect. Controlling instrument reviewed: None - imitation scheduled drug only (17-A M.R.S. 1101(19)). Conclusion: no operative instrument reaches a structurally-dissimilar endogenous opioid peptide; status LEGAL at the state controlled-substances level. Residual risk: minimal. Federal floor still applies (Analogue Act human-consumption contingency + FD&C unapproved-new-drug).

Controlling language, verbatim

17-A M.R.S. 1101(19): "'Imitation scheduled drug,' a substance that is not a scheduled drug ... but which, by dosage unit appearance or by representations made, would lead a reasonable person to believe that the substance was a scheduled drug." No structure/effect analogue offense. [Appearance/representation only.]

Source of excerpt

Citations

1. None - imitation scheduled drug only (17-A M.R.S. 1101(19)) (Maine Legislature) PRIMARYOFFICIAL
2. 17-A M.R.S. 1101(7) (opiate def, incl. 'analgesic' - definitional only) (Maine Legislature)OFFICIAL

Where Endomorphin-1 stands across the country

Among Maine's one neighbor, New Hampshire is legal, the same posture as Maine.

Open the interactive map · Every compound in Maine

Federal posture

Not federally scheduled. Endomorphin-1 - not federally scheduled; endogenous opioid tetrapeptide, no CSA entry and no analogue-act structural hook Federal detail

Verbatim law on file for Maine

1 instrument on file for this compound's framework in Maine; 2 of 2 citations above are official sources. Each text carries its source and a fingerprint that changes when the law does.

**Schedule gap — § 1102(2)(C) & (H):** "any of the following hallucinogenic drugs, or their salts, isomers, and salts of isomers … (1) Bufotenine (2) Ibogaine (3) Mescaline … (6) Psilocybin (7) Psilocyn …" and (H): "(5) Diethyltryptamine, DET; (6) Dimethyltryptamine, DMT; (7) Dipropyltryptamine, DPT; … (12) Alpha-ethyltryptamine, AET." (4-HO-MET not named; no structural tryptamine class.)
— 17-A M.R.S. § 1102, official Maine Legislature: https://www.mainelegislature.org/legis/statutes/17-a/title17-Asec1102.html
**No chemical analog — § 1101(19):** "'Imitation scheduled drug,' a substance that is not a scheduled drug … but which, by dosage unit appearance or by representations made, would lead a reasonable person to believe that the substance was a scheduled drug." (Appearance/representation-based, not a "substantially similar chemical structure" analog act. The full § 1101 definitions contain no "scheduled drug analog" provision.) Isomer is defined narrowly at § 1101(3).
— 17-A M.R.S. § 1101, official Maine Legislature: https://www.mainelegislature.org/legis/statutes/17-a/title17-Asec1101.html

Related

Endomorphin-1 in neighboring states

• Endomorphin-1 in New Hampshire Legal

Endomorphin-1 in other states

Same framework in Maine

• 4-HO-MET (Metocin) in Maine Legal
• 5-MAPB in Maine Legal
• Blue Lotus (Nymphaea caerulea) in Maine Legal
• Amanita muscaria / Muscimol in Maine Legal

Other compounds in Maine

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