HS 293334 Other fentanyls and their derivatives
Quick Answer: HS code 293334 covers "Other fentanyls and their derivatives," encompassing various synthetic opioid analgesics structurally related to fentanyl, excluding those specifically classified elsewhere. These are potent pharmaceutical substances primarily used for pain management and anesthesia. Importers and customs brokers should note the significant duty rate disparity. The UK and EU apply a 0.00% ad valorem duty rate, as per the UK Trade Tariff and EU TARIC, respectively. In contrast, the US imposes a 6.5% ad valorem duty rate, with specific preferential programs offering duty-free entry (e.g., under A+, AU, BH, CL, KR, SG). Additionally, certain US tariff lines may include a compound duty of 15.4¢/kg + 52%. Due to their controlled substance status, trade in these products is subject to stringent regulatory oversight and licensing requirements from agencies like the DEA in the US and equivalent bodies in the UK and EU.
What Are the Import Duty Rates?
🇬🇧 United Kingdom
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2933340000 | 0.00 % | — | — |
🇪🇺 European Union (TARIC)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2933340000 | 0.00 % | — | — |
🇺🇸 United States (HTSUS)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2933340000 | 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 2933.34?
Imports of Other fentanyls and their derivatives 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 293334 cover?
This subheading covers "Other fentanyls and their derivatives," specifically focusing on chemical compounds structurally related to fentanyl that are not elsewhere specified within the Harmonized System. As per the World Customs Organization (WCO) Harmonized System Nomenclature and further detailed in the USITC Harmonized Tariff Schedule of the United States (HTSUS) and the EU TARIC, this includes various synthetic opioid analgesics derived from 4-anilidopiperidine, which possess similar pharmacological properties to fentanyl. Examples include acetylfentanyl, carfentanil, sufentanil, and remifentanil, provided they are not specifically enumerated in other subheadings under Heading 2933. This classification is for the pure chemical compounds, not preparations or mixtures.
What falls outside HS 293334?
The following products are excluded from HS 293334: fentanyl itself, which is specifically classified under HS 293333. Also excluded are pharmaceutical preparations containing fentanyls or their derivatives, which are classified under Chapter 30, typically subheading 3004, if they are medicaments put up in measured doses or in forms or packings for retail sale. Furthermore, intermediates in the synthesis of fentanyls that do not themselves possess the characteristic chemical structure of a fentanyl derivative are classified elsewhere, often under other subheadings within Chapter 29 based on their specific chemical functional groups, such as piperidine derivatives without the full fentanyl structure.
What are common classification mistakes for HS 293334?
A common error is misclassifying fentanyl itself under this subheading, rather than its specific code 293333. Another frequent mistake involves classifying pharmaceutical preparations containing fentanyls or their derivatives here, instead of under Chapter 30. Importers sometimes overlook General Interpretative Rule (GRI) 3(a) when dealing with mixtures or composite goods, incorrectly applying a chemical classification when a preparation for therapeutic or prophylactic uses (Chapter 30) would be more appropriate. Additionally, failing to correctly identify a compound as a "derivative" of fentanyl based on its chemical structure, leading to classification under a more general heterocyclic compound subheading, is a recurring issue.
How should importers classify products under HS 293334?
The correct procedure for classifying products under HS 293334 involves a meticulous review of the chemical structure and name of the substance. Importers and customs brokers should first confirm that the product is indeed a chemical compound and not a pharmaceutical preparation. Next, verify that the compound is a fentanyl derivative, excluding fentanyl itself, by cross-referencing with the WCO HS Explanatory Notes, the USITC HTSUS, and EU TARIC. Obtain a Certificate of Analysis (CoA) or a Safety Data Sheet (SDS) from the manufacturer to confirm the precise chemical name and structure. If the product is a mixture, apply GRI 3 to determine the essential character. For any ambiguity, consider requesting a binding ruling from the relevant customs authority (e.g., CBP in the US, HMRC in the UK, or national customs authorities in the EU).
Which HS Codes Are Related?
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FAQ
What are the standard Most Favored Nation (MFN) duty rates for HS code 2933.34 ('Other fentanyls and their derivatives') in key markets?
The MFN duty rates for HS 2933.34 can vary significantly by importing country. For example, the United States generally applies a duty rate of 6.5% ad valorem under the Harmonized Tariff Schedule of the United States (HTSUS). In contrast, the European Union's TARIC database often shows a 0.00% duty rate for this classification, and the UK Global Tariff also typically lists a 0.00% duty rate. Importers should always consult the specific tariff schedule of the importing country for the most accurate and up-to-date MFN rates.
Are there any preferential duty rates available for HS 2933.34 under common Free Trade Agreements (FTAs) or special programs?
Yes, preferential duty rates are frequently available for HS 2933.34, often resulting in a 'Free' (0.00%) duty. In the United States, for instance, goods originating from countries with which the U.S. has FTAs may qualify for duty-free treatment. This includes countries under agreements such as A+ (Generalized System of Preferences), AU (Australia FTA), BH (Bahrain FTA), CL (Chile FTA), CO (Colombia TPA), D (Dominican Republic-Central America FTA), E (Andean Trade Promotion and Drug Eradication Act), IL (Israel FTA), JO (Jordan FTA), K (Republic of Korea FTA), KR (Korea FTA), MA (Morocco FTA), OM (Oman FTA), P (Panama TPA), PA (Panama TPA), PE (Peru TPA), S (Singapore FTA), and SG (Singapore FTA). Eligibility depends on meeting the specific Rules of Origin criteria of the respective agreement. Importers must ensure proper documentation, such as a Certificate of Origin, is available to claim these preferential rates.
What are the key classification criteria for 'Other fentanyls and their derivatives' under HS 2933.34, and how does it differ from related codes?
HS 2933.34 specifically covers 'Other fentanyls and their derivatives' that are not elsewhere specified within subheading 2933.3. The primary classification criterion is the chemical structure, specifically heterocyclic compounds with nitrogen hetero-atom(s) only, containing an unfused pyridine ring (whether or not hydrogenated) in the structure. This code is distinct from 2933.33 ('Alfentanil, anileridine, bezitramide, bromazepam, difenoxin, diphenoxylate, dipipanone, eticyclidine (PCP), fentanyl, ketobemidone, pethidine (meperidine), phencyclidine (PCP), piritramide, propiram, remifentanil and tilidine; salts thereof') which lists specific fentanyl compounds and other substances. Classification requires precise chemical identification to ensure the substance is indeed a fentanyl derivative not explicitly named in 2933.33 and fits the broader chemical group of 2933.3. The World Customs Organization's Explanatory Notes provide detailed guidance on the scope of these headings.
What specific documentation and regulatory requirements are typically needed for importing substances classified under HS 2933.34?
Given that substances under HS 2933.34 are controlled substances, stringent documentation and regulatory requirements apply. In addition to standard import documentation (commercial invoice, packing list, bill of lading/air waybill), importers will typically need:
- Import Permits/Licenses: Issued by the relevant national drug control authorities (e.g., U.S. Drug Enforcement Administration (DEA), European Medicines Agency (EMA), UK Home Office).
- End-Use Certificates: Often required to confirm the legitimate purpose (e.g., pharmaceutical manufacturing, research) of the imported substance.
- Safety Data Sheets (SDS): Providing critical information on chemical properties, hazards, and safe handling.
- Certificates of Analysis (CoA): Confirming the purity and composition of the substance.
- Compliance with International Conventions: Adherence to the UN Single Convention on Narcotic Drugs of 1961 and the Convention on Psychotropic Substances of 1971 is mandatory. Importers must coordinate closely with customs brokers and regulatory agencies well in advance of shipment.