Data / Federal rules / 2026-08595

Specific Listing for Hexahydrocannabinol, A Currently Controlled Schedule I Substance

The Drug Enforcement Administration published this final rule in the Federal Register on May 4, 2026. It took effect on May 4, 2026.

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What the agency says

The Drug Enforcement Administration (DEA) is establishing a specific listing and DEA Controlled Substances Code Number (drug code) for 6,6,9-trimethyl-3-pentyl-6a,7,8,9,10,10a-hexahydro-6H- benzo[c]chromen-1-ol (also known as hexahydrocannabinol, and HHC) in schedule I of the Controlled Substances Act (CSA). Although hexahydrocannabinol is not specifically listed in schedule I of the CSA with its own unique drug code, it is a schedule I controlled substances in the United States under drug code 7370 because it meets the definition of tetrahydrocannabinols, a schedule I hallucinogen. Therefore, DEA is simply amending the schedule I hallucinogenic substances list to separately include hexahydrocannabinol.

Key facts

Document number: 2026-08595
Type: Final rule
Action: Final rule
Agency: Justice Department; Drug Enforcement Administration
Published: May 4, 2026
Takes effect: May 4, 2026
Dates: Effective May 4, 2026.
Docket: Docket No. DEA-1632
Code of Federal Regulations: 21 CFR 1308
Topics: Administrative practice and procedure; Drug traffic control; Reporting and recordkeeping requirements
Pages: 3

The document on federalregister.gov PDF

Other documents from the Drug Enforcement Administration

Document	Type	Published
Schedules of Controlled Substances: Temporary Placement of 7- Hydroxymitragynine and Mitragynine Pseudoindoxyl Above a Specified Threshold in Schedule I 2026-20943	Proposed rule	Oct 14
Schedules of Controlled Substances: Temporary Placement of MGM-15 and MGM-16 in Schedule I 2026-20942	Proposed rule	Oct 14
Schedules of Controlled Substances; Removal of Exemption Status for Inactive Butalbital Products 2026-20757	Final rule	Oct 9
Schedules of Controlled Substances: Placement of O-Desmethyltramadol in Schedule I; Correction 2026-20748	Final rule	Oct 9
Extension of Reexportation Period. 2026-20084	Proposed rule	Oct 1
Schedules of Controlled Substances: Placement of 4-Hydroxy-N,N-Diisopropyltryptamine (4-OH-DiPT), 5-Methoxy-alpha-Methyltryptamine (5-MeO-AMT), 5-Methoxy-N-Methyl-N-Isopropyltryptamine (5-MeO-MiPT), 5-Methoxy-N,N-Diethyltryptamine (5-MeO-DET), and N,N-Diisopropyltryptamine (DiPT) Into Schedule I 2026-19400	Proposed rule	Sep 23
Schedules of Controlled Substances: Placement of Diphenidine in Schedule I 2026-19231	Final rule	Sep 21
Schedules of Controlled Substances: Placement of Cipepofol in Schedule IV 2026-17536	Final rule	Aug 27

Everything from the Drug Enforcement Administration · Rules on administrative practice and procedure · Rules on drug traffic control · Rules on reporting and recordkeeping requirements · Published in May 2026

Read from the Federal Register API, last updated 2026-10-24. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.