# 4-methyl-1-phenyl-2-(pyrrolidin-1-yl)pentan-1-one (other names: α-PiHP; alpha-PiHP) — Federal controlled substance schedule (I-V) by drug, with DEA code number

For 4-methyl-1-phenyl-2-(pyrrolidin-1-yl)pentan-1-one (other names: α-PiHP; alpha-PiHP), schedule is Schedule I; listed under is Hallucinogenic substances; dea code number is 7551; cfr citation is 21 CFR 1308.11(d)(103), recorded from its source on 2026-09-01.

- **Substance:** 4-methyl-1-phenyl-2-(pyrrolidin-1-yl)pentan-1-one (other names: α-PiHP; alpha-PiHP) _(verified: appears in the quote below)_
- **Schedule:** Schedule I _(verified: appears in its own passage below)_
- **Listed under:** Hallucinogenic substances _(verified: appears in its own passage below)_
- **DEA code number:** 7551 _(verified: appears in the quote below)_
- **CFR citation:** 21 CFR 1308.11(d)(103) _(our reading, not quoted from the source)_

## What the source says

> (103) 4-methyl-1-phenyl-2-(pyrrolidin-1-yl)pentan-1-one (other names: α-PiHP; alpha-PiHP) | 7551 |

## 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

> (d) Hallucinogenic substances.

## 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/).