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HSChapter 29
U.S. exports of compounds containing an unfused pyridine ring, nesoi (HS 2933399055) totaled $47.4M in June 2026, traded with 77 countries.
Pyridine-ring compounds classified under 2933399055 are heterocyclic organic chemicals widely used as active pharmaceutical ingredients, agrochemical intermediates, and specialty chemical building blocks. The 'unfused' and 'NESOI' (not elsewhere specified or included) designations mean this line captures pyridine-containing structures that do not fit more specific subheadings within heading 2933, requiring careful structural analysis at classification. Importers of pharmaceutical-grade pyridine derivatives should be aware that certain compounds from China may be subject to Section 301 tariffs, and that DEA scheduling or FDA drug substance registration may apply depending on the specific molecule.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Classification within heading 2933 proceeds from the most specific subheading to the residual NESOI line. If the compound's pyridine ring is fused with another ring system, or if it falls under a named compound subheading (such as those for specific vitamins or agrochemicals), it will not be classified under 2933399055. A structural analysis and review of the heading's subheading notes is required.
Pyridine-containing compounds originating from China classified under 2933399055 may be subject to Section 301 tariffs. Given that China is a significant source of pharmaceutical and agrochemical intermediates, importers should confirm current list coverage and any applicable exclusions with a licensed customs broker before importation.
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| Country | Imports | Exports | Balance |
|---|---|---|---|
| BRAZIL | -- | $17.8M | +$17.8M |
| BELGIUM | -- | $12.6M | +$12.6M |
| INDIA | -- | $5.0M | +$5.0M |
| SWITZERLAND | -- | $3.1M | +$3.1M |
| CHINA | -- | $1.6M | +$1.6M |
No geographic breakdown available
U.S. trade for this product is not broken down by state or port in the latest Census Bureau release.