Is Mitragynine Pseudoindoxyl Legal in Arkansas? (2026)

Federal

Pseudoindoxyl -- federally Schedule I (DEA temporary order, drug code 9672, eff. 2026-08-26) (effective 2026-08-26). State-law reading underneath: Illegal.

Rule type

permanent

Tier

schedule i

Schedule

schedule 1

Effective

2015-11-08

Controlling language, verbatim

AR ADH Schedule I(c) (Opium derivatives / Narcotic Drugs): "...any of the following opium derivatives, its salts, ISOMERS, and salts of isomers whenever the existence of such...isomers...is possible within the specific chemical designation: (24) Mitragynine; (25) 7-Hydroxymitragynine." The optical/positional/geometric limiter is expressly scoped to paragraph (d) hallucinogens ONLY ("for purposes of this paragraph only"), so (c) "isomers" takes its broad ordinary meaning. Pseudoindoxyl is a constitutional isomer of the named 7-Hydroxymitragynine (both C23H30N2O5).

Source of excerpt

Citations

1. Arkansas Register Vol. XXXIX No. 5 (Nov. 2015), Adopted Rules and Regulations (Arkansas Secretary of State) PRIMARYOFFICIAL

Change history

• 2026-07-25Effective date changed from none to 2015-11-08.

Where Mitragynine Pseudoindoxyl stands across the country

Among Arkansas's 6 neighbors, Louisiana, Missouri, Mississippi, Oklahoma, Tennessee and Texas are illegal, the same posture as Arkansas.

Open the interactive map · Every compound in Arkansas

Federal posture

Federally scheduled or prohibited. Pseudoindoxyl -- federally Schedule I (DEA temporary order, drug code 9672, eff. 2026-08-26) Federal detail

Pending deadlines

• 2026-08-01 · Federal · DEA temporary Schedule I order for mitragynine pseudoindoxyl, MGM-15, MGM-16 - effective on Federal Register publication (DEA NOI 2026-07-01)
• 2026-08-05 · Federal · DEA temporary Schedule I - mitragynine pseudoindoxyl, MGM-15, MGM-16 (DEA-1644 / FR 2026-17429)
  Second DEA Notice of Intent filed with the Federal Register on 7/1/2026 (companion to the 7-OH NOI, DEA-1570), placing three 7-OH-RELATED substances — mitragynine pseudoindoxyl (MP), MGM-15, and MGM-16 — into Schedule I under 21 U.S.C. 811(h). HHS confirmed these have no accepted medical use and a high potential for abuse. Same procedural clock as the 7-OH NOI: 30-day notice period, temporary order cannot issue before ~2026-08-05, effective on Federal Register publication of the order, 2-year duration (+1 yr possible). Unlike the 7-OH NOI there is NO concentration threshold here — these named substances are controlled outright. Confirm the exact companion docket number when the Federal Register posts on 7/6/2026.
• 2026-11-13 · Federal · DEA to replace pseudoindoxyl Schedule I order with a threshold order (re-notice) (DEA-1570 / FR 2026-20943)
  On or after Nov 13, 2026 DEA intends to withdraw the Aug 26 order (FR 2026-17429) and place pseudoindoxyl in Schedule I only above a threshold: more than 1 mg/g or 1 mg/mL alone or combined with 7-OH, or mitragynine under 100 times the pseudoindoxyl or combined amount. Until then it stays Schedule I at any amount. MGM-15 and MGM-16 stay Schedule I unchanged (FR 2026-20942).

Verbatim law on file for Arkansas

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

Arkansas Dept. of Health, List of Controlled Substances (rule; auth. Ark. Code Ann. 5-64-216 & 5-64-101 et seq.), Schedule I:
(c) Opium derivatives (Narcotic Drugs) - governing chapeau for the mitragynine listing:
"(c) Opium derivatives: (Narcotic Drugs) Unless specifically excepted or unless listed in another schedule, any of the following opium derivatives, its salts, isomers, and salts of isomers whenever the existence of such salts, isomers, and salts of isomers is possible within the specific chemical designation:"
Entries:
"(24) Mitragynine (11-2015)"
"(25) 7-Hydroxymitragynine (11-2015)"

(d) Hallucinogenic substances chapeau - the optical/positional/geometric limiter, expressly scoped to (d) ONLY (does NOT govern the (c) mitragynine listing):
"...(for purposes of this paragraph only, the term \"isomer\" includes the optical, position and geometric isomers):"

Ark. Code Ann. 5-64-101 (Definitions): no general definition of "isomer."

Related

Mitragynine Pseudoindoxyl in neighboring states

• Mitragynine Pseudoindoxyl in Louisiana Illegal
• Mitragynine Pseudoindoxyl in Missouri Illegal
• Mitragynine Pseudoindoxyl in Mississippi Illegal
• Mitragynine Pseudoindoxyl in Oklahoma Illegal
• Mitragynine Pseudoindoxyl in Tennessee Illegal
• Mitragynine Pseudoindoxyl in Texas Illegal

Mitragynine Pseudoindoxyl in other states

Same framework in Arkansas

• 7-OH (7-Hydroxymitragynine) in Arkansas Illegal
• Kratom (Whole Leaf / Mitragynine) in Arkansas Illegal
• Speciociliatine in Arkansas Illegal

Other compounds in Arkansas

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