UN 1988 Convention Table I Precursors
Substances regulated under UN 1988 Convention Table I Precursors. 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
Table I of the United Nations Convention against Illicit Traffic in Narcotic Drugs and Psychotropic Substances, 1988, monitored by the International Narcotics Control Board (INCB). Table I covers precursors critical to the illicit manufacture of narcotic drugs and psychotropic substances — ephedrine-class substances, ergot alkaloids, safrole-group chemicals, and fentanyl and amphetamine/MDMA designer precursors — and carries the Convention’s strictest trade controls, including pre-export notification between governments. It is the international parent of national regimes such as China’s precursor categories and the US DEA lists. The most recent amendments added 4-AP, 1-boc-4-AP and norfentanyl (effective 23 November 2022) and 4-piperidone, 1-boc-4-piperidone and two series of glycidic-acid designer-precursor esters (effective 3 December 2024). Salts of listed substances are controlled wherever they can exist. ChemAbout lists the 31 Table I entries that carry a CAS number; 12 footnote-controlled esters without CAS numbers are not expanded. ChemAbout does not facilitate procurement for listed CAS numbers.
- Maintained by:
- International Narcotics Control Board (INCB)
- Substances listed:
- 31
- Last reviewed:
- Most recently listed:
| Substance | CAS | Status | Listed since |
|---|---|---|---|
| 1-Phenyl-2-propanone (P-2-P / BMK)↗ | 103-79-7 | Listed | — |
| 3,4-MDP-2-P methyl glycidate (PMK glycidate)↗ | 13605-48-6 | Listed | 2019-11-19 |
| 3,4-MDP-2-P methyl glycidic acid (PMK glycidic acid)↗ | 2167189-50-4 | Listed | 2019-11-19 |
| 3,4-MDP-2-P methyl glycidic acid, ethyl ester (PMK ethyl glycidate)↗ | 28578-16-7 | Listed | 2024-12-03 |
| 3,4-Methylenedioxyphenyl-2-propanone (PMK / MDP2P)↗ | 4676-39-5 | Listed | — |
| 4-Anilino-N-phenethylpiperidine (ANPP)↗ | 21409-26-7 | Listed | — |
| 4-Piperidone↗ | 41661-47-6 | Listed | 2024-12-03 |
| Acetic anhydride↗ | 108-24-7 | Listed | — |
| alpha-Phenylacetoacetamide (APAA)↗ | 4433-77-6 | Listed | 2019-11-19 |
| alpha-Phenylacetoacetonitrile (APAAN)↗ | 4468-48-8 | Listed | — |
| Ephedrine↗ | 299-42-3 | Listed | — |
| Ergometrine↗ | 60-79-7 | Listed | — |
| Ergotamine↗ | 113-15-5 | Listed | — |
| Isosafrole↗ | 120-58-1 | Listed | — |
| Lysergic acid↗ | 82-58-6 | Listed | — |
| Methyl alpha-phenylacetoacetate (MAPA)↗ | 16648-44-5 | Listed | 2020-11-03 |
| N-Acetylanthranilic acid↗ | 89-52-1 | Listed | — |
| N-Phenethyl-4-piperidone (NPP)↗ | 39742-60-4 | Listed | — |
| N-Phenyl-4-piperidinamine (4-AP)↗ | 23056-29-3 | Listed | 2022-11-23 |
| Norephedrine (phenylpropanolamine)↗ | 14838-15-4 | Listed | — |
| Norfentanyl↗ | 1609-66-1 | Listed | 2022-11-23 |
| P-2-P methyl glycidic acid (BMK glycidic acid)↗ | 25547-51-7 | Listed | 2024-12-03 |
| P-2-P methyl glycidic acid, ethyl ester (BMK ethyl glycidate)↗ | 41232-97-7 | Listed | 2024-12-03 |
| P-2-P methyl glycidic acid, methyl ester (BMK methyl glycidate)↗ | 80532-66-7 | Listed | 2024-12-03 |
| Phenylacetic acid↗ | 103-82-2 | Listed | — |
| Piperonal↗ | 120-57-0 | Listed | — |
| Potassium permanganate↗ | 7722-64-7 | Listed | — |
| Pseudoephedrine↗ | 90-82-4 | Listed | — |
| Safrole↗ | 94-59-7 | Listed | — |
| tert-Butyl 4-(phenylamino)piperidine-1-carboxylate (1-boc-4-AP)↗ | 125541-22-2 | Listed | 2022-11-23 |
| tert-Butyl 4-oxopiperidine-1-carboxylate (1-boc-4-piperidone)↗ | 79099-07-3 | Listed | 2024-12-03 |
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.