Product classification
HS code for 4-anilino-N-phenethylpiperidine: 2933.36
Heterocyclic compounds, containing an unfused pyridine ring (whether or not hydrogenated) in the structure, 4-anilino-N-phenethylpiperidine (ANPP).
Classification of 4-anilino-N-phenethylpiperidine under HS 2933.36
4-anilino-N-phenethylpiperidine, frequently referred to by its acronym ANPP, is classified under HS code 2933.36. This classification is based on its chemical structure as a heterocyclic compound containing an unfused pyridine ring. Specifically, it is a derivative of piperidine. As an organic chemical, it resides within Chapter 29 of the Harmonized System. The specific subheading 2933.36 was established to monitor the trade of this substance due to its critical role as a primary precursor in the illicit and licit manufacture of fentanyl and its various analogues. The classification is determined by the General Rules of Interpretation (GRI), specifically Rule 1, which dictates that classification is determined by the terms of the headings and any relative section or chapter notes. Since ANPP is a defined organic compound, it must be classified according to its molecular architecture regardless of its intended use in pharmaceutical research or industrial synthesis.
- Covers
- 4-anilino-N-phenethylpiperidine (ANPP)
- ANPP in powder form
- ANPP chemical reagents
- N-phenyl-1-(2-phenylethyl)piperidin-4-amine
- Also under 2933.36
- Cayman Chemical ANPP (forensic standard)
- Cerilliant ANPP (analytical reference material)
Codes often confused with 2933.36
Common mistake. ANPP is often misclassified under HS code 2933.33, which is reserved for fentanyl and its derivatives like alfentanil, sufentanil, and remifentanil. While ANPP is used to make these substances, it is a precursor and not the finished narcotic. It may also be confused with HS code 2933.39, which serves as a residual category for other heterocyclic compounds with an unfused pyridine ring not elsewhere specified. However, because 2933.36 specifically names ANPP, it takes precedence over the general 2933.39 code.
Top exporters and importers of HS 293336 (the code used for 4-anilino-N-phenethylpiperidine), 2025
In 2025, the largest exporter of HS 293336 (the code used for 4-anilino-N-phenethylpiperidine) in UN Comtrade data was the United States, with 49% of world exports; the largest importer in UN Comtrade data was India, with 26% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 293336, not only 4-anilino-N-phenethylpiperidine.
Top exporters 2025 · share of world exports
- 1 United States $22K 49% of world exports
- 2 Germany $20K 44% of world exports
- 3 Netherlands $2K 3.8% of world exports
World total: $45K Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 India $22K 26% of world imports
- 2 Romania $15K 18% of world imports
- 3 Malaysia $9K 11% of world imports
World total: $84K Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for 4-anilino-N-phenethylpiperidine
Brazil classifies 4-anilino-N-phenethylpiperidine under NCM 2933.36.00: HS 2933.36 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about 4-anilino-N-phenethylpiperidine
What is the HS code for 4-anilino-N-phenethylpiperidine?
The HS code for 4-anilino-N-phenethylpiperidine is 293336 (Heterocyclic compounds; containing an unfused pyridine ring (whether or not hydrogenated) in the structure, 4-anilino-N-phenethylpiperidine (ANPP)). The specific HS code for 4-anilino-N-phenethylpiperidine (ANPP) is 2933.36.
How do I classify 4-anilino-N-phenethylpiperidine for customs?
4-anilino-N-phenethylpiperidine is classified under HS code 293336 — Heterocyclic compounds; containing an unfused pyridine ring (whether or not hydrogenated) in the structure, 4-anilino-N-phenethylpiperidine (ANPP). This is a 6-digit subheading level code.
Is ANPP subject to international trade controls?
Yes, because it is a precursor for controlled substances, shipments under HS code 2933.36 often require special permits and are monitored by the International Narcotics Control Board (INCB).
Which countries are the top exporters of 4-anilino-N-phenethylpiperidine (HS 293336)?
In 2025, the top exporters of HS 293336 (the code used for 4-anilino-N-phenethylpiperidine) in UN Comtrade data were the United States ($22K, 49% of world exports), Germany ($20K) and the Netherlands ($2K). World exports came to about $45K, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of 4-anilino-N-phenethylpiperidine (HS 293336)?
In 2025, the top importers of HS 293336 (the code used for 4-anilino-N-phenethylpiperidine) in UN Comtrade data were India ($22K, 26% of world imports), Romania ($15K) and Malaysia ($9K). World imports came to about $84K, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Is the HS code for 4-anilino-N-phenethylpiperidine the same in all countries?
The base HS code 293336 for 4-anilino-N-phenethylpiperidine is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for 4-anilino-N-phenethylpiperidine in Brazil?
In Brazil, 4-anilino-N-phenethylpiperidine (HS 293336) is classified under NCM 2933.36.00.