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Final Rule

Schedules of Controlled Substances: Extension of Temporary Placement of CUMYL-PEGACLONE in Schedule I of the Controlled Substances Act

Temporary scheduling order; extension.

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Summary:

The Administrator of the Drug Enforcement Administration (DEA) is issuing this temporary scheduling order to extend the temporary schedule I status of CUMYL-PEGACLONE. In an order dated December 12, 2023, DEA temporarily placed CUMYL-PEGACLONE in schedule I of the Controlled Substances Act. This temporary order will extend the temporary scheduling of CUMYL-PEGACLONE for one year, or until the permanent scheduling action for this substance is completed, whichever occurs first. As a result of this order, the regulatory controls and administrative, civil, and criminal sanctions applicable to schedule I controlled substances will continue to be imposed on persons who handle (manufacture, distribute, reverse distribute, import, export, engage in research, conduct instructional activities or chemical analysis with, or possess) or propose to handle CUMYL-PEGACLONE.

Key Dates
Citation: 90 FR 57542
This temporary scheduling order, which extends schedule I control of CUMYL-PEGACLONE covered by an order (88 FR 86040, December 12, 2023), is effective December 12, 2025, and expires on December 12, 2026. If DEA publishes a final rule making this scheduling action permanent, this order will expire on the effective date of that rule, if the effective date is earlier than December 12, 2026.
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In Plain English

What is this Federal Register notice?

This is a final rule published in the Federal Register by Justice Department, Drug Enforcement Administration. Final rules have completed the public comment process and establish legally binding requirements.

Is this rule final?

Yes. This rule has been finalized. It has completed the notice-and-comment process required under the Administrative Procedure Act.

Who does this apply to?

Temporary scheduling order; extension.

When does it take effect?

This document has been effective since December 12, 2025.

Document Details

Document Number2025-22496
FR Citation90 FR 57542
TypeFinal Rule
PublishedDec 11, 2025
Effective DateDec 12, 2025
RIN-
Docket IDDocket No. DEA-1511
Pages57542–57543 (2 pages)
Text FetchedYes

Agencies & CFR References

CFR References:

Linked CFR Parts

PartNameAgency
21 CFR 1308 Schedules of Controlled Substances... -

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Related Documents (by RIN/Docket)

Doc #TypeTitlePublished
2025-22495 Proposed Rule Schedules of Controlled Substances: Plac... Dec 11, 2025

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Full Document Text (2,068 words · ~11 min read)

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<RULE> DEPARTMENT OF JUSTICE <SUBAGY>Drug Enforcement Administration</SUBAGY> <CFR>21 CFR Part 1308</CFR> <DEPDOC>[Docket No. DEA-1511]</DEPDOC> <SUBJECT>Schedules of Controlled Substances: Extension of Temporary Placement of CUMYL-PEGACLONE in Schedule I of the Controlled Substances Act</SUBJECT> <HD SOURCE="HED">AGENCY:</HD> Drug Enforcement Administration, Department of Justice. <HD SOURCE="HED">ACTION:</HD> Temporary scheduling order; extension. <SUM> <HD SOURCE="HED">SUMMARY:</HD> The Administrator of the Drug Enforcement Administration (DEA) is issuing this temporary scheduling order to extend the temporary schedule I status of CUMYL-PEGACLONE. In an order dated December 12, 2023, DEA temporarily placed CUMYL-PEGACLONE in schedule I of the Controlled Substances Act. This temporary order will extend the temporary scheduling of CUMYL-PEGACLONE for one year, or until the permanent scheduling action for this substance is completed, whichever occurs first. As a result of this order, the regulatory controls and administrative, civil, and criminal sanctions applicable to schedule I controlled substances will continue to be imposed on persons who handle (manufacture, distribute, reverse distribute, import, export, engage in research, conduct instructional activities or chemical analysis with, or possess) or propose to handle CUMYL-PEGACLONE. </SUM> <EFFDATE> <HD SOURCE="HED">DATES:</HD> This temporary scheduling order, which extends schedule I control of CUMYL-PEGACLONE covered by an order (88 FR 86040, December 12, 2023), is effective December 12, 2025, and expires on December 12, 2026. If DEA publishes a final rule making this scheduling action permanent, this order will expire on the effective date of that rule, if the effective date is earlier than December 12, 2026. </EFFDATE> <FURINF> <HD SOURCE="HED">FOR FURTHER INFORMATION CONTACT:</HD> Dr. Terrence L. Boos, Drug and Chemical Evaluation Section, Diversion Control Division, Drug Enforcement Administration; Mailing Address: 8701 Morrissette Drive, Springfield, Virginia 22152; Telephone: (571) 362-3249. </FURINF> <SUPLINF> <HD SOURCE="HED">SUPPLEMENTARY INFORMATION:</HD> In this order, the Drug Enforcement Administration (DEA) extends the temporary scheduling of CUMYL-PEGACLONE in schedule I of the Controlled Substances Act (CSA), including 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: • CUMYL-PEGACLONE (SGT-151; 5-pentyl-2-(2-phenylpropan-2-yl)pyrido[4,3-b]indol-1-one). <HD SOURCE="HD1">Background and Legal Authority</HD> On December 12, 2023, pursuant to 21 U.S.C. 811(h)(1), DEA published an order in the <E T="04">Federal Register</E> temporarily placing CUMYL-PEGACLONE in schedule I of the CSA based upon a finding that this substance poses an imminent hazard to the public safety. <SU>1</SU> <FTREF/> That temporary order was effective upon the date of publication. Pursuant to 21 U.S.C. 811(h)(2), the temporary scheduling of a substance expires at the end of two years from the date of issuance of the scheduling order, except that DEA may extend temporary scheduling of that substance for up to one year during the pendency of proceedings under 21 U.S.C. 811(a)(1) with the respect to the temporarily controlled substance. In this instance, the temporary scheduling of CUMYL-PEGACLONE expires on December 12, 2025, unless extended. <FTNT> <SU>1</SU>   <E T="03">Schedules of Controlled Substances: Temporary Placement of MDMB-4en-PINACA, 4F-MDMB-BUTICA, ADB-4en-PINACA, CUMYL-PEGACLONE, 5F-EDMB-PICA, and MMB-FUBICA into Schedule I,</E> 88 FR 86040 (December 12, 2023). </FTNT> Proceedings for the issuance, amendment, or repeal of the scheduling of any drug or other substance under 21 U.S.C. 811(a) may be initiated by the Attorney General (delegated to the Administrator of DEA pursuant to 28 CFR 0.100) on her own motion, at the request of the Secretary of the Department of Health and Human Services (HHS), or on the petition of any interested party. <SU>2</SU> <FTREF/> The Administrator of DEA, on his own motion pursuant to 21 U.S.C. 811(a), has initiated proceedings under 21 U.S.C. 811(a)(1) to permanently schedule CUMYL-PEGACLONE. DEA is publishing a notice of proposed rulemaking elsewhere in this issue of the <E T="04">Federal Register</E> for the permanent placement of CUMYL-PEGACLONE in schedule I. If that proposed rule is finalized, DEA will publish a final rule in the <E T="04">Federal Register</E> to make permanent the schedule I status of this substance. <FTNT> <SU>2</SU>  21 U.S.C. 811(a). As discussed in a memorandum of understanding entered into by the Food and Drug Administration (FDA) and the National Institute on Drug Abuse (NIDA), FDA acts as the lead agency within HHS in carrying out the Secretary's scheduling responsibilities under the CSA, with the concurrence of NIDA. <E T="03">Memorandum of Understanding with the National Institute on Drug Abuse,</E> 50 FR 9518 (Mar. 8, 1985). Because the Secretary has delegated to the Assistant Secretary for Health of HHS the authority to make domestic drug scheduling recommendations, <E T="03">see Comprehensive Drug Abuse Prevention and Control Act of 1970, Public Law 91-513, As Amended; Delegation of Authority,</E> 58 FR 35460 (July 1, 1993), for purposes of this temporary order, all subsequent references to “Secretary” have been replaced with “Assistant Secretary.” </FTNT> Pursuant to 21 U.S.C. 811(h)(2), the Administrator orders that the temporary scheduling of CUMYL-PEGACLONE and its salts, isomers, and salts of isomers whenever the existence of such salts, isomers, and salts of isomers is possible, be extended for one year, or until the permanent scheduling proceeding is completed, whichever occurs first. <HD SOURCE="HD1">Regulatory Matters</HD> The CSA provides for an expedited temporary scheduling action where such action is necessary to avoid an imminent hazard to the public safety. <SU>3</SU> <FTREF/> This provision of the CSA allows the Attorney General, by order, to temporarily place substances in schedule I. <SU>4</SU> <FTREF/> The same subsection also provides that the temporary scheduling of a substance shall expire at the end of two years from the date of the issuance of the order scheduling such substance, except that the Attorney General may, during the pendency of proceedings to permanently schedule the substance under 21 U.S.C. 811(a)(1), extend the temporary scheduling for up to one year. <FTNT> <SU>3</SU>  21 U.S.C. 811(h). </FTNT> <FTNT> <SU>4</SU>   <E T="03">Id.</E> </FTNT> To the extent that 21 U.S.C. 811(h) directs that temporary scheduling actions be issued by order and sets forth the procedures by which such orders are to be issued and extended, the notice and comment requirements of the Administrative Procedure Act (APA) at 5 U.S.C. 553, do not apply to this extension of the temporary scheduling action. The APA expressly differentiates between orders and rules, as it defines an “order” to mean a “final disposition, whether affirmative, negative, injunctive, or declaratory in form, of an agency <E T="03">in a matter other than rule making.</E> ”  <SU>5</SU> <FTREF/> This contrasts with permanent scheduling actions, which are subject to formal rulemaking procedures done “on the record after opportunity for a hearing,” and final decisions that conclude the scheduling process and are subject to judicial review. <SU>6</SU> <FTREF/> The specific language chosen by Congress indicates an intention for DEA to proceed through the issuance of an order instead of proceeding by rulemaking. Given that Congress specifically requires the Attorney General to follow rulemaking procedures for other kinds of scheduling actions, <SU>7</SU> <FTREF/> it is noteworthy that, in subsection 811(h), Congress authorized the issuance of temporary scheduling actions by order rather than by rule. <FTNT> <SU>5</SU>  5 U.S.C. 551(6) (emphasis added). </FTNT> <FTNT> <SU>6</SU>  21 U.S.C. 811(a) and 877. </FTNT> <FTNT> <SU>7</SU>   <E T="03">See</E> 21 U.S.C. 811(a). </FTNT> In the alternative, even if this action were subject to 5 U.S.C. 553, the Administrator finds that there is good cause under 5 U.S.C. 553(b)(B) and (d)(3) to forgo the notice-and-comment requirements and the delayed effective date requirements of such section, as any further delays in the process for extending the temporary scheduling order would be impracticable and contrary to the public interest in view of the manifest urgency to avoid an imminent hazard to the public safety that this substance would present if scheduling expired, for the reasons expressed in the temporary scheduling order. <SU>8</SU> <FTREF/> <FTNT> <SU>8</SU>   <E T="03">See Schedules of Controlled Substances: Temporary Placement of MDMB-4en-PINACA, 4F-MDMB-BUTICA, ADB-4en-PINACA, CUMYL-PEGACLONE, 5F-EDMB-PICA, and MMB-FUBICA into Schedule I, 88 FR 86040 (December 12, 2023).</E> </FTNT> Further, DEA believes that this order extending the temporary scheduling action is not a “rule” as defined by 5 U.S.C. 601(2) and, accordingly, is not subject to the requirements of the Regulatory Flexibility Act (RFA). The requirements for the preparation of an initial regulatory flexibility analysis in 5 U.S.C. 603(a) are not applicable where, as here, DEA is not required by the APA at 5 U.S.C. 553 or any other law to publish a general notice of proposed rulemaking. Therefore, in this instance, since DEA believes this temporary scheduling action is not a “rule,” it is not subject to the requirements of the RFA when issuing this temporary action. In addition, in accordance with the principles of Executive Orders (E.O.) 12866 and 13563, this action is not a significant regulatory action. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Preview showing 10k of 14k characters. Full document text is stored and available for version comparison. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
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