HS code · 6-digit subheading
HS Code 2933.36 – Heterocyclic compounds; containing an unfused pyridine ring (whether or not hydrogenated) in the structure, 4-anilino-N-phenethylpiperidine (ANPP)
HS code 2933.36 is the 6-digit subheading for heterocyclic compounds, containing an unfused pyridine ring (whether or not hydrogenated) in the structure, 4-anilino-N-phenethylpiperidine (ANPP). It is used for 4-ANPP, N-phenethyl-4-anilinopiperidine, fentanyl precursor ANPP and 4-Anilino-N-phenethylpiperidine hydrochloride.
What HS 2933.36 covers
This HS code identifies 4-anilino-N-phenethylpiperidine (ANPP), a critical precursor chemical in the illicit synthesis of fentanyl and its analogues. Its trade is extremely restricted and heavily monitored globally due to its direct link to the production of highly dangerous controlled substances. Legitimate international trade is virtually non-existent, limited to highly specialized research laboratories or government agencies for forensic analysis or counter-narcotics efforts, and only under strict licensing and oversight. Importers and exporters are typically government-authorized entities or highly regulated chemical suppliers with specific permits. Key things to know include its classification as a Schedule I or II precursor chemical under various national and international drug control laws, making unauthorized possession, trade, or manufacture illegal and subject to severe penalties. Its presence in trade often signals illicit activity.
- Covers
- 4-ANPP
- N-phenethyl-4-anilinopiperidine
- Fentanyl precursor ANPP
- 4-Anilino-N-phenethylpiperidine hydrochloride
- Examples
- Cayman Chemical ANPP (forensic standard)
- Cerilliant ANPP (analytical reference material)
Codes often confused with 2933.36
Common mistake. ANPP is often confused with other fentanyl precursors like NPP (HS 2933.37) or other piperidine derivatives, necessitating precise chemical identification to avoid misclassification and ensure proper regulatory enforcement.
Top exporters and importers of HS code 293336, 2025
In 2025, the largest exporter of HS code 293336 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.
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 2933.36
Brazil does not split HS 2933.36: its NCM code is 2933.36.00.
All Brazil NCM codes in heading 29.33 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 2933.36
What is HS code 293336?
HS code 293336 is a 6-digit subheading in the Harmonized System that covers: Heterocyclic compounds; containing an unfused pyridine ring (whether or not hydrogenated) in the structure, 4-anilino-N-phenethylpiperidine (ANPP). This HS code identifies 4-anilino-N-phenethylpiperidine (ANPP), a critical precursor chemical in the illicit synthesis of fentanyl and its analogues. Its trade is extremely restricted and heavily monitored globally due to its direct link to the production of highly dangerous controlled substances. Legitimate international trade is virtually non-existent, limited to highly specialized research laboratories or government agencies for forensic analysis or counter-narcotics efforts, and only under strict licensing and oversight. Importers and exporters are typically government-authorized entities or highly regulated chemical suppliers with specific permits. Key things to know include its classification as a Schedule I or II precursor chemical under various national and international drug control laws, making unauthorized possession, trade, or manufacture illegal and subject to severe penalties. Its presence in trade often signals illicit activity.
What products fall under HS code 293336?
4-ANPP, N-phenethyl-4-anilinopiperidine, Fentanyl precursor ANPP, 4-Anilino-N-phenethylpiperidine hydrochloride
What are common misclassifications for HS code 293336?
ANPP is often confused with other fentanyl precursors like NPP (HS 2933.37) or other piperidine derivatives, necessitating precise chemical identification to avoid misclassification and ensure proper regulatory enforcement.
Which countries are the top exporters of goods under HS code 293336?
In 2025, the top exporters of HS code 293336 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 goods under HS code 293336?
In 2025, the top importers of HS code 293336 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.
How is HS code 293336 structured?
HS code 293336 is a 6-digit subheading under the Harmonized System. The first 2 digits (29) identify the chapter, digits 3-4 (33) identify the heading, and digits 5-6 (36) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 293336?
In Brazil, HS code 293336 is NCM 2933.36.00. The last two digits are 00 because Brazil does not split this HS code further.