# O-desmethyltramadol, its isomers, esters, ethers, salts, and salts of isomers, esters and ethers (other names: O-DSMT; desmetramadol; 3-[(1R,2R)-2-[(dimethylamino)methyl]-1-hydroxycyclohexyl]phenol) — Federal controlled substance schedule (I-V) by drug, with DEA code number

For O-desmethyltramadol, its isomers, esters, ethers, salts, and salts of isomers, esters and ethers (other names: O-DSMT; desmetramadol; 3-[(1R,2R)-2-[(dimethylamino)methyl]-1-hydroxycyclohexyl]phenol), schedule is Schedule I; listed under is Temporary listing of substances subject to emergency scheduling; dea code number is 9667; temporary listing expires is Aug. 12, 2028; cfr citation is 21 CFR 1308.11(h)(88), recorded from its source on 2026-10-15.

- **Substance:** O-desmethyltramadol, its isomers, esters, ethers, salts, and salts of isomers, esters and ethers (other names: O-DSMT; desmetramadol; 3-[(1R,2R)-2-[(dimethylamino)methyl]-1-hydroxycyclohexyl]phenol) _(verified: appears in the quote below)_
- **Schedule:** Schedule I _(verified: appears in its own passage below)_
- **Listed under:** Temporary listing of substances subject to emergency scheduling _(verified: appears in its own passage below)_
- **DEA code number:** 9667 _(verified: appears in the quote below)_
- **Temporary listing expires:** Aug. 12, 2028 _(verified: appears in its own passage below)_
- **CFR citation:** 21 CFR 1308.11(h)(88) _(our reading, not quoted from the source)_

## What the source says

> (88) O-desmethyltramadol, its isomers, esters, ethers, salts, and salts of isomers, esters and ethers (other names: O-DSMT; desmetramadol; 3-[(1R,2R)-2-[(dimethylamino)methyl]-1-hydroxycyclohexyl]phenol) | 9667 |

## Where each value comes from

This source states these in separate places, so each value is shown with the passage that states it.

### Schedule

> § 1308.11 Schedule I.

### Listed under

> (h) Temporary listing of substances subject to emergency scheduling.

### Temporary listing expires

> revising paragraph (h)(88), effective Oct. 9, 2026 through Aug. 12, 2028

## Source

- https://www.ecfr.gov/current/title-21/chapter-II/part-1308

Last verified: 2026-10-15. Review by: 2027-02-12.
Part of [Federal controlled substance schedule (I-V) by drug, with DEA code number](https://referencesource.org/dea-controlled-substance-schedule-by-drug/).