HS 293336 4-Anilino-N-phenethylpiperidine (ANPP)
Quick Answer: HS code 2933.36 specifically covers 4-Anilino-N-phenethylpiperidine (ANPP), a chemical compound classified under heterocyclic compounds with nitrogen hetero-atom(s) only. This substance is primarily known as a precursor in the illicit manufacture of fentanyl and related synthetic opioids, making its trade highly regulated globally. Importers and exporters should be aware of significant variations in duty rates and strict controls. The UK Trade Tariff currently lists a 0.00% duty rate. The EU TARIC applies a 6.50% ad valorem duty. In the US, the general Most Favored Nation (MFN) rate is 6.5%, though various Free Trade Agreement (FTA) programs offer duty-free entry (e.g., A+, AU, CL). Due to its precursor status, transactions involving ANPP are subject to stringent licensing, reporting, and anti-diversion measures by national and international drug enforcement agencies, regardless of the duty rate. Compliance with chemical control regulations is paramount.
What Are the Import Duty Rates?
🇬🇧 United Kingdom
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2933360000 | 0.00 % | — | — |
🇪🇺 European Union (TARIC)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2933360000 | 6.50 % | — | — |
🇺🇸 United States (HTSUS)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2933360000 | 6.5% | Free (18 programs) | ["kg"] |
Special rates available under trade agreements including USMCA, KORUS, GSP.
Duty rates sourced from the USITC (US International Trade Commission) Harmonized Tariff Schedule (HTS) (accessed 2/22/2026), EU TARIC – DG TAXUD (Directorate-General for Taxation and Customs Union) (accessed 2/22/2026), and UK Trade Tariff – HMRC (His Majesty's Revenue and Customs) (accessed 2/22/2026).
Data compiled and presented by HSRates.
Which Trade Agreements Reduce Duties for HS 2933.36?
Imports of 4-Anilino-N-phenethylpiperidine (ANPP) may qualify for reduced or zero duty rates under free trade agreements and preferential programs. The overview below shows available preferential arrangements by jurisdiction, compiled by HSRates from official tariff and trade agreement data.
United States (HTSUS)
Free for USMCA, KORUS, and 16 other programs
European Union (TARIC)
Preferential rate data not yet available.
United Kingdom
Preferential rate data not yet available.
Preferential rates require proof of origin and may be subject to quotas or conditions. Always verify eligibility with a licensed customs broker.
Data compiled by HSRates.
Which Preferential Rates Apply to Your Origin Country?
Select an origin country to see if preferential rates apply.
Preferential rates based on available trade agreements. Actual rates may vary.
How Has Trade Volume Developed?
Trade Volume 2023
How to Classify This HS Code?
What products does HS 293336 cover?
This subheading covers 4-Anilino-N-phenethylpiperidine, commonly known as ANPP, a specific chemical compound classified under Heading 2933 of the Harmonized System. Heading 2933 encompasses heterocyclic compounds with nitrogen hetero-atom(s) only, and ANPP specifically falls under the subheading for compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure. As defined by the World Customs Organization (WCO) Harmonized System Nomenclature and reflected in national tariffs such as the USITC Harmonized Tariff Schedule (HTSUS) and the EU TARIC, this classification is precise for the chemical structure of ANPP, ensuring consistent global trade identification for this particular substance.
What falls outside HS 293336?
The following products are excluded from HS 293336: other piperidine derivatives that do not possess the exact 4-anilino-N-phenethyl structure. For instance, N-phenethyl-4-piperidinone (NPP), a common precursor in the synthesis of ANPP, is classified under HS 2933.39. Similarly, other heterocyclic compounds containing nitrogen, but lacking the specific piperidine ring or the anilino-N-phenethyl substitution, would be classified elsewhere within Chapter 29, potentially under other subheadings of 2933 or even other headings depending on their precise chemical structure and functional groups. Products that are mixtures containing ANPP, but not predominantly ANPP, might also be classified differently based on the General Interpretive Rules (GIRs).
What are common classification mistakes for HS 293336?
A common error is misclassifying precursors or derivatives of ANPP under HS 293336, such as N-phenethyl-4-piperidinone (NPP) or other related piperidine compounds. Importers sometimes mistakenly apply this code to substances that are chemically similar but do not precisely match the 4-anilino-N-phenethylpiperidine structure, violating the principle of specific chemical nomenclature in Chapter 29. Another frequent mistake involves overlooking the "unfused pyridine ring" criterion of Heading 2933, leading to incorrect classification of nitrogen-containing heterocycles with different ring systems. Adherence to General Interpretive Rule 1, which dictates classification according to the terms of the headings and any relative section or chapter notes, is crucial to avoid such errors.
How should importers classify products under HS 293336?
The correct procedure for classifying products under HS 293336 involves a meticulous review of the chemical's precise structural formula to confirm it is indeed 4-Anilino-N-phenethylpiperidine. Importers and customs brokers should obtain a Certificate of Analysis (CoA) or a Safety Data Sheet (SDS) that clearly identifies the chemical name, CAS number, and structural formula. Cross-referencing this information with the WCO HS Nomenclature, the USITC HTSUS, or the EU TARIC for Heading 2933 and subheading 293336 is essential. If there is any doubt, consulting a customs expert or requesting a binding tariff information (BTI) ruling from the relevant customs authority (e.g., CBP in the US, HMRC in the UK) is highly recommended to ensure accuracy and compliance, mitigating potential penalties for misclassification.
Which HS Codes Are Related?
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FAQ
What is the Most Favored Nation (MFN) import duty rate for HS code 2933.36 in the United States?
For HS code 2933.36, covering '4-Anilino-N-phenethylpiperidine (ANPP) and its salts,' the United States MFN (General) import duty rate is 6.5% ad valorem. This rate applies to goods from countries without specific preferential trade agreements with the U.S. or that do not qualify for special programs. Importers should consult the latest Harmonized Tariff Schedule of the United States (HTSUS) for any updates.
Are there any preferential duty rates available for HS 2933.36, and which trade agreements apply?
Yes, preferential duty rates are available for HS 2933.36 under various U.S. free trade agreements and special programs. For example, imports from countries like Australia (AU), Bahrain (BH), Chile (CL), Colombia (CO), Israel (IL), Jordan (JO), Korea (KR), Morocco (MA), Oman (OM), Panama (PA), Peru (PE), and Singapore (SG) may qualify for a 'Free' (0.00%) duty rate, provided all rules of origin requirements are met. Other programs, such as the Generalized System of Preferences (GSP), might also offer duty-free treatment from eligible developing countries, denoted by 'A+' or 'A' in the HTSUS. Importers must ensure they have the correct documentation, such as a certificate of origin, to claim these preferential rates.
What are the key classification criteria for 4-Anilino-N-phenethylpiperidine (ANPP) under HS 2933.36?
HS code 2933.36 specifically covers '4-Anilino-N-phenethylpiperidine (ANPP) and its salts.' The classification criteria hinge on the chemical structure of the compound. Chapter 29 of the Harmonized System covers organic chemicals. Heading 2933 is for 'Heterocyclic compounds with nitrogen hetero-atom(s) only.' Subheading 2933.3 is for 'Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure.' ANPP, being a piperidine derivative (a hydrogenated pyridine ring), falls under this subheading. The specific six-digit code 2933.36 is reserved for ANPP, indicating its precise chemical identity. Importers must ensure the chemical name, CAS number, and structural formula match the description for accurate classification.
Are there any specific documentation requirements or regulatory considerations for importing ANPP (HS 2933.36) into the U.S.?
Beyond standard customs documentation (commercial invoice, packing list, bill of lading/air waybill), importers of ANPP (HS 2933.36) must be aware of potential regulatory controls due to its status as a List I chemical under the U.S. Drug Enforcement Administration (DEA) regulations. ANPP is a precursor chemical used in the illicit manufacture of fentanyl. Therefore, importers will likely need to obtain a DEA import permit, maintain meticulous records, and comply with all DEA reporting requirements. Failure to comply can result in significant penalties. It is crucial for importers to verify current DEA regulations and obtain all necessary permits prior to importation.
How do EU TARIC and UK Trade Tariff rates compare for HS 2933.36?
For HS 2933.36, '4-Anilino-N-phenethylpiperidine (ANPP) and its salts,' the EU TARIC (Integrated Tariff of the European Union) typically applies a Common Customs Tariff (CCT) duty rate of 6.5% ad valorem for MFN countries. Similarly, the UK Global Tariff (UKGT) for HS 2933.36 also applies a 6.5% ad valorem duty rate for MFN imports. Both the EU and the UK offer preferential duty rates (often 0.00%) under their respective free trade agreements (e.g., with Korea, Singapore, etc.) and generalized scheme of preferences for developing countries. Importers should always consult the official EU TARIC database or the UK Trade Tariff for the most current and specific duty rates, including any anti-dumping duties or specific import measures that may apply.