HS 293341 Compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused
Quick Answer: HS code 293341 covers chemical compounds characterized by the presence of a quinoline or isoquinoline ring-system in their molecular structure, which may or may not be hydrogenated, and are not further fused with other ring systems. This classification specifically targets the basic chemical structures rather than more complex derivatives. For importers and exporters, duty rates vary significantly by jurisdiction. In the UK and EU, products classified under 293341 typically benefit from a 0.00% ad valorem duty rate, indicating duty-free entry. Conversely, the United States imposes a more complex duty structure, with rates potentially including "Free" for some entries, but also specific duties such as 15.4¢/kg plus an ad valorem rate of 67.5% for others, as per the USITC Harmonized Tariff Schedule. Importers should verify the specific subheading for their product to determine the exact US duty rate. This disparity highlights the critical need for precise HS classification and origin determination to accurately calculate landed costs and ensure compliance.
What Are the Import Duty Rates?
🇬🇧 United Kingdom
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2933410000 | 0.00 % | — | — |
🇪🇺 European Union (TARIC)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2933410000 | 0.00 % | — | — |
🇺🇸 United States (HTSUS)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2933410000 | Free | — | ["kg"] |
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.
How to Classify This HS Code?
What products does HS 293341 cover?
This subheading covers compounds that possess a quinoline or isoquinoline ring-system within their chemical structure, regardless of whether these ring-systems are hydrogenated. The critical condition for classification here is that these quinoline or isoquinoline ring-systems are not further fused with other ring-systems. This definition aligns with the World Customs Organization (WCO) Harmonized System Nomenclature and is reflected in official national tariffs such as the USITC Harmonized Tariff Schedule of the United States (HTSUS) and the European Union's TARIC system, ensuring consistent global application for these specific heterocyclic compounds.
What falls outside HS 293341?
The following products are excluded from HS 293341: compounds where the quinoline or isoquinoline ring-system is further fused with additional ring-systems, as these would typically fall into other subheadings within Heading 2933 or even other chapters if they form part of more complex structures like alkaloids or provitamins. For example, acridine, which contains a fused tricyclic system incorporating a quinoline-like structure, would be excluded. Similarly, compounds that are specifically provided for elsewhere in Chapter 29, such as certain vitamins or provitamins, even if they contain a quinoline moiety, would take precedence due to more specific classification provisions.
What are common classification mistakes for HS 293341?
A common error is misinterpreting the "not further fused" criterion, leading to the incorrect inclusion of compounds with more complex, multi-ring fused systems that incorporate a quinoline or isoquinoline core. Importers sometimes overlook the precise chemical structure, failing to distinguish between a simple quinoline ring and a quinoline ring that is an integral part of a larger, fused polycyclic system. This often results from insufficient chemical analysis or a superficial review of the compound's name rather than its full structural formula, which is crucial for accurate application of General Interpretative Rule (GRI) 1.
How should importers classify products under HS 293341?
The correct procedure for classifying products under HS 293341 involves a thorough review of the chemical structure to confirm the presence of an unfused quinoline or isoquinoline ring-system. Importers and customs brokers should obtain the complete chemical name, CAS number, and structural formula for the compound. It is essential to verify that the quinoline or isoquinoline moiety is not further fused with other rings, as this is the primary determinant for this subheading. If there is any ambiguity, consulting a qualified chemist or seeking a binding ruling from the relevant customs authority (e.g., CBP in the US, HMRC in the UK, or national customs administrations in the EU) is highly recommended to ensure compliance and avoid potential penalties.
Which HS Codes Are Related?
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FAQ
What is the Most Favored Nation (MFN) duty rate for HS 293341 in major markets?
The MFN duty rates for compounds classified under HS 293341 vary significantly by importing country. For example, as per the US Harmonized Tariff Schedule (HTSUS), the MFN (General) duty rate for 2933.41.00 is 'Free'. In contrast, the UK Global Tariff (UKGT) also lists the MFN duty rate as '0.00 %' for this heading. However, some countries may apply specific or compound duties. Importers should always consult the official tariff schedule of the destination country (e.g., USITC HTSUS, EU TARIC, UK Trade Tariff) for the most current and precise duty rate applicable to their specific origin and destination.
What are the key classification criteria for products under HS 293341?
HS 293341 specifically covers 'Compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused'. The primary classification criteria, as per the Harmonized System Explanatory Notes (HSENs) for Chapter 29, focus on the chemical structure. The compound must contain either a quinoline or an isoquinoline ring-system. Crucially, this ring-system must not be further fused with other heterocyclic or carbocyclic rings beyond the inherent fusion within the quinoline or isoquinoline structure itself. If the quinoline or isoquinoline ring is part of a more complex fused system, it would likely be classified elsewhere, potentially under 2933.49 or other relevant subheadings based on the most specific chemical description. Importers should provide a detailed chemical structure and CAS number to their customs broker or classification specialist.
Are there any preferential duty rates available for HS 293341 under common trade agreements?
Yes, preferential duty rates are often available for HS 293341 under various free trade agreements (FTAs) and generalized system of preferences (GSP) schemes, provided the goods meet the respective rules of origin. For instance, goods originating from FTA partner countries (e.g., USMCA for North America, EU's agreements with various partners, UK's trade agreements) may qualify for a 'Free' or reduced duty rate. Similarly, imports from GSP beneficiary countries might also enter at a 'Free' rate. Importers must ensure they have valid certificates of origin (e.g., Certificate of Origin Form A for GSP, specific FTA certificates) to claim these preferential tariffs. Failure to provide proper documentation will result in the application of the MFN duty rate.
What specific documentation is required for importing chemicals under HS 293341?
In addition to standard import documentation such as the commercial invoice, packing list, and bill of lading/air waybill, importing chemicals under HS 293341 often requires specific regulatory documentation. This may include a Safety Data Sheet (SDS) or Material Safety Data Sheet (MSDS) to comply with chemical safety regulations (e.g., OSHA in the US, REACH in the EU, COSHH in the UK). Depending on the specific compound and its intended use, additional permits or declarations from agencies like the Environmental Protection Agency (EPA) in the US, European Chemicals Agency (ECHA) in the EU, or similar national bodies might be necessary. Importers should verify all national chemical control regulations and ensure compliance prior to shipment to avoid delays or penalties.
Could a compound under HS 293341 be subject to anti-dumping or countervailing duties?
While less common for highly specific pharmaceutical or fine chemical intermediates like those typically found in 293341 compared to bulk commodities, it is theoretically possible for any imported product to be subject to anti-dumping (AD) or countervailing duties (CVD). These duties are imposed by importing countries to counteract unfair trade practices (dumping or subsidies) by exporting countries. Importers should regularly check the relevant trade remedy databases of the importing country (e.g., US International Trade Commission (USITC) for the US, EU Commission's trade defense website, UK Trade Remedies Authority (TRA)) to determine if any AD/CVD measures are currently in effect for specific chemical compounds originating from particular countries that might fall under or be related to HS 293341. This is a dynamic area of trade compliance.