# Pethidine-Intermediate-B, ethyl-4-phenylpiperidine-4-carboxylate — Federal controlled substance schedule (I-V) by drug, with DEA code number

For Pethidine-Intermediate-B, ethyl-4-phenylpiperidine-4-carboxylate, schedule is Schedule II; listed under is Opiates; dea code number is 9233; cfr citation is 21 CFR 1308.12(c)(21), recorded from its source on 2026-09-01.

- **Substance:** Pethidine-Intermediate-B, ethyl-4-phenylpiperidine-4-carboxylate _(verified: appears in the quote below)_
- **Schedule:** Schedule II _(verified: appears in its own passage below)_
- **Listed under:** Opiates _(verified: appears in its own passage below)_
- **DEA code number:** 9233 _(verified: appears in the quote below)_
- **CFR citation:** 21 CFR 1308.12(c)(21) _(our reading, not quoted from the source)_

## What the source says

> (21) Pethidine-Intermediate-B, ethyl-4-phenylpiperidine-4-carboxylate | 9233 |

## Where each value comes from

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

### Schedule

> § 1308.12 Schedule II.

### Listed under

> (c) Opiates.

## Source

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

Last verified: 2026-09-01. Review by: 2026-12-30.
Part of [Federal controlled substance schedule (I-V) by drug, with DEA code number](https://referencesource.org/dea-controlled-substance-schedule-by-drug/).