CN Precursor Chemicals Cat.2
Substances regulated under CN Precursor Chemicals Cat.2. Select a CAS number to view the compound and its full regulatory status.
Controlled substances
Substances on this list are tightly controlled under chemical-weapons or precursor regulations. ChemAbout does not facilitate their procurement; this page is a compliance reference only.
About this list
Category II of China’s controlled precursor chemicals covers important reagents, solvents and fentanyl/amphetamine precursor intermediates that can be diverted to illicit drug manufacture. The list is regulated under the Regulation on the Administration of Precursor Chemicals and subsequent State Council / ministry notices. Category II includes classic entries such as phenylacetic acid, acetic anhydride, chloroform, diethyl ether and piperidine, plus later-added substances including bromine, propiophenone, BMK/PMK glycidic-acid intermediates, 4-anilinopiperidine (4-AP) and its Boc-protected form, norfentanyl, cannabidiol and — from July 2025 — 4-piperidone and 1-Boc-4-piperidone.
- Maintained by:
- Ministry of Public Security of the People’s Republic of China
- Substances listed:
- 20
- Last reviewed:
- Most recently listed:
| Substance | CAS | Status | Listed since |
|---|---|---|---|
| 1-Boc-4-anilinopiperidine (1-Boc-4-AP)↗ | 125541-22-2 | Listed | 2024-09-01 |
| 1-Boc-4-piperidone (tert-butyl 4-oxopiperidine-1-carboxylate)↗ | 79099-07-3 | Listed | 2025-07-20 |
| 3-Oxo-2-phenylbutanoic acid↗ | 4433-88-9 | Listed | 2024-09-01 |
| 4-Anilinopiperidine (4-AP)↗ | 23056-29-3 | Listed | 2024-09-01 |
| 4-Piperidone↗ | 41661-47-6 | Listed | 2025-07-20 |
| Acetic anhydride↗ | 108-24-7 | Listed | — |
| alpha-Phenylacetoacetamide (APAA)↗ | 4433-77-6 | Listed | — |
| BMK glycidic acid (2-methyl-3-phenylglycidic acid)↗ | 25547-51-7 | Listed | 2024-09-01 |
| BMK methyl glycidate (methyl 2-methyl-3-phenylglycidate)↗ | 80532-66-7 | Listed | 2024-09-01 |
| Bromine↗ | 7726-95-6 | Listed | — |
| Cannabidiol↗ | 13956-29-1 | Listed | 2024-09-01 |
| Chloroform↗ | 67-66-3 | Listed | — |
| Diethyl ether↗ | 60-29-7 | Listed | — |
| Methyl alpha-acetylphenylacetate (MAPA)↗ | 16648-44-5 | Listed | — |
| Norfentanyl↗ | 1609-66-1 | Listed | 2024-09-01 |
| Phenylacetic acid↗ | 103-82-2 | Listed | — |
| Piperidine↗ | 110-89-4 | Listed | — |
| PMK glycidic acid (2-methyl-3-[3,4-methylenedioxyphenyl]glycidic acid)↗ | 2167189-50-4 | Listed | — |
| PMK methyl glycidate (3,4-MDP-2-P methyl glycidate)↗ | 13605-48-6 | Listed | — |
| Propiophenone (1-phenyl-1-propanone)↗ | 93-55-0 | Listed | — |
ChemAbout is a discovery platform and does not facilitate transactions in controlled substances. Regulatory data is provided for reference and may not reflect the latest amendments — always consult the official source.