Product classification
HS code for ANPP: 2933.36
Heterocyclic compounds, containing an unfused pyridine ring (whether or not hydrogenated) in the structure, 4-anilino-N-phenethylpiperidine (ANPP).
Classification of ANPP under HS 2933.36
ANPP, or 4-anilino-N-phenethylpiperidine, is classified under HS code 293336 due to its precise chemical structure and explicit mention within the Harmonized System nomenclature. This specific code covers "Heterocyclic compounds; containing an unfused pyridine ring (whether or not hydrogenated) in the structure, 4-anilino-N-phenethylpiperidine (ANPP)." Chapter 29 is dedicated to organic chemicals, and this subheading is highly specific, directly identifying ANPP. The compound's molecular structure, which includes a piperidine ring and an anilino-N-phenethyl substituent, falls squarely within the description of a heterocyclic compound containing an unfused pyridine ring, even though piperidine is a hydrogenated pyridine derivative. The direct naming of ANPP ensures its accurate and unambiguous classification.
- Covers
- 4-anilino-N-phenethylpiperidine (ANPP)
- Chemical precursors specifically identified as ANPP
- Pharmaceutical intermediates consisting solely of ANPP
- Controlled substances identified as ANPP
- Also under 2933.36
- Cayman Chemical ANPP (forensic standard)
- Cerilliant ANPP (analytical reference material)
Codes often confused with 2933.36
Common mistake. Misclassification of ANPP can occur if the specific naming within the HS code is overlooked. A common error is to classify it under HS code 293339, which is a residual category for "Other heterocyclic compounds with an unfused pyridine ring." However, 293336 is the correct code because ANPP is explicitly named. Classifying ANPP under more general codes like HS 293332 for "Pyridine and its salts" or HS 293333 for "Piperidine and its salts" would be incorrect. While ANPP contains structural elements derived from pyridine and piperidine, it is a much more complex and specific compound. The detailed structure of ANPP, including its anilino and phenethyl groups, necessitates the use of the highly specific code 293336, which directly identifies the substance.
Top exporters and importers of HS 293336 (the code used for ANPP), 2025
In 2025, the largest exporter of HS 293336 (the code used for ANPP) 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 ANPP.
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 ANPP
Brazil classifies ANPP 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 ANPP
What is the HS code for ANPP?
The HS code for ANPP is 293336 (Heterocyclic compounds; containing an unfused pyridine ring (whether or not hydrogenated) in the structure, 4-anilino-N-phenethylpiperidine (ANPP)). The HS code for 4-anilino-N-phenethylpiperidine (ANPP) is 293336.
How do I classify ANPP for customs?
ANPP 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.
Why is ANPP classified under Chapter 29?
ANPP is classified under Chapter 29 because it is a distinct organic chemical compound. Chapter 29 of the Harmonized System is dedicated to organic chemicals, providing specific classifications for individual compounds or groups of compounds based on their chemical structure and functional groups. ANPP, as a complex heterocyclic compound, fits precisely within this chapter's scope for chemical substances.
Which countries are the top exporters of ANPP (HS 293336)?
In 2025, the top exporters of HS 293336 (the code used for ANPP) 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 ANPP (HS 293336)?
In 2025, the top importers of HS 293336 (the code used for ANPP) 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 ANPP the same in all countries?
The base HS code 293336 for ANPP 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 ANPP in Brazil?
In Brazil, ANPP (HS 293336) is classified under NCM 2933.36.00.