# Federal Register #2026-22717

DEA rule separately lists 3-CMC as a Schedule I controlled substance

**Buyer:** Drug Enforcement Administration (DEA)
**Posted:** November 06, 2026
**Identifier:** 2026-22717

The U.S. Drug Enforcement Administration issued a final rule clarifying the separate Schedule I listing of 3-chloromethcathinone (3-CMC).
- **Government buyer:** U.S. Department of Justice, Drug Enforcement Administration (DEA).
- **Action:** Separately list 3-CMC in Schedule I of the Controlled Substances Act and assign it a DEA Controlled Substances Code Number.
- **Notable detail:** 3-CMC was already controlled as a positional isomer of 4-chloromethcathinone; the rule does not change its controlled-substance status.
- **Procurement:** No products or services are requested, and no OEMs or vendors are identified.

### Description

The Drug Enforcement Administration is establishing a specific listing and DEA Controlled Substances Code Number for 3-chloromethcathinone (3-CMC) in schedule I of the Controlled Substances Act. The substance is already controlled in schedule I as a positional isomer of 4-chloromethcathinone. This final rule amends the schedule I hallucinogenic substances list to separately include 3-chloromethcathinone and assign it a drug code. The rule is effective November 6, 2026.

[View original listing](https://www.federalregister.gov/documents/2026/11/06/2026-22717/specific-listing-for-3-chloromethcathinone-a-currently-controlled-schedule-i-substance)