DEA issues notice of intent to temporarily place O-desmethyltramadol in Schedule I of the Controlled Substances Act
Risk profileHIGH — The forthcoming temporary order imposes Schedule I criminal and civil sanctions on all handlers of O-DSMT across the regulated population, requiring immediate registration, inventory, and supply-chain review by any firm or institution currently working with the substance or its derivatives.
The DEA published a notice of intent on June 24, 2026 to place O-desmethyltramadol (O-DSMT) in Schedule I on a temporary basis. The forthcoming order imposes full Schedule I controls and criminal, civil, and administrative sanctions on all persons who handle the substance.
- Full Schedule I Control Regime Incoming.Once the temporary order issues, every handler of O-DSMT, including manufacturers, distributors, importers, exporters, researchers, and possessors, becomes subject to the complete Schedule I regulatory framework. No grandfather period is indicated in the notice of intent.
- Broad Substance Definition Captures Derivatives.The scheduling action covers O-DSMT's isomers, esters, ethers, salts, and salts of isomers, esters, and ethers. Firms handling any chemically related form of the substance must assess whether their inventory falls within the defined scope before the order issues.
- Research and Analytical Use Requires DEA Authorization.Instructional activities and chemical analysis with O-DSMT are explicitly listed as regulated conduct. Academic institutions, contract research organizations, and analytical laboratories currently working with the substance must obtain Schedule I researcher registration before the order takes effect.
- Criminal Sanctions Attach Upon Order Issuance.The notice confirms that criminal sanctions applicable to Schedule I substances will apply to handlers upon issuance of the temporary order. Distributors and suppliers in the gray-market novel psychoactive substance space face immediate exposure at that point.
Bottom lineThe notice of intent initiates the formal process under which O-DSMT becomes a Schedule I controlled substance. Upon issuance of the temporary order, all manufacture, distribution, import, export, research, and possession of O-DSMT without DEA Schedule I authorization becomes subject to criminal, civil, and administrative sanctions. Firms and institutions currently handling O-DSMT in any form, including its salts and isomers, carry an immediate obligation to assess their registration status and supply-chain exposure before the order issues.
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