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HSChapter 29
U.S. imports of heterocyclic compounds with unfused furan ring (nesoi) (HS 293219) totaled $10.0M in June 2026, traded with 22 countries.
Importers of Heterocyclic Compounds with Unfused Furan Ring (NESOI) paid $977K in duties in June 2026 — an effective duty rate of 12% on $7.9M in dutiable value, based on actual customs collections rather than the published tariff schedule. Heterocyclic Compounds with Unfused Furan Ring (NESOI) imports of $10.0M in June 2026 ran 69% above the year-to-date monthly average of $5.9M.
Last updated: June 2026 dataCompounds containing an unfused furan ring system — excluding furfural and other specifically enumerated furans — are classified here and split across three US tariff lines: a general NESOI line (2932190002), aromatic compounds with an unfused furan ring in the structure (2932191000), and non-aromatic counterparts (2932195100). China dominates US import supply, followed by Japan and India, reflecting the concentration of fine-chemical and pharmaceutical intermediate manufacturing in Asia. Many of these compounds serve as building blocks in agrochemical, pharmaceutical, and specialty polymer synthesis, making correct aromatic/non-aromatic classification critical to duty determination. Importers should confirm whether a specific compound falls under a more specific HS6 provision before defaulting to this NESOI heading.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
The US schedule distinguishes aromatic or modified-aromatic furan-ring compounds (2932191000) from non-aromatic ones (2932195100). The classification turns on whether the compound's furan ring is fused to an aromatic ring system or otherwise meets the aromatic/modified-aromatic definition under the HTS General Rules. A licensed customs broker or chemist familiar with IUPAC nomenclature should review the structural formula before filing.
Yes — furfural (furan-2-carbaldehyde), furfuryl alcohol, tetrahydrofurfuryl alcohol, and several other specifically named furan derivatives have their own dedicated HS subheadings earlier in Chapter 29. Only compounds not more specifically provided for elsewhere fall into this NESOI provision.
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Monthly import values over time
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2932195100 | NON-AROM CMPDS CONT AN UNFUSED FURAN RING | $7.9M | 10.82% | 92.41% | $855K |
| 2932191000 | AROM CMPDS CONT AN UNFUSED FURAN RING IN THE STRUC | $2.1M | 5.85% | 26.39% | $122K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2932190002 | COMPOUNDS CONT AN UNFUSED FURAN RING ETC, NESOI | $1.3M |
NUCLEIC ACIDS & SALTS; OTHER HETEROCYCLIC CMP, NES
HS 293499
POLYPEPTIDE PROTEIN& GLYCOPROTEIN HORMONES &DERIV
HS 293719
CMPDS CONT AN UNFUSED PYRIDINE RING ETC NESOI
HS 293339
BENZENE
HS 290220
HETEROCYCLIC COMP W NITROGEN HETERO-ATM ONLY NESOI
HS 293399
HETEROCYCLIC COMP WITH UNFUSED PYRAZOLE RING NESOI
HS 293319
| State | Imports | Exports | Balance |
|---|---|---|---|
| California | $3.6M | $20K | -$3.6M |
| Puerto Rico | $1.5M | -- | -$1.5M |
| Pennsylvania | $1.0M | $293K | -$729K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| LOS ANGELES, CA | $3.6M | -- | -$3.6M |
| NEWARK, NJ | $2.5M | $99K | -$2.4M |
| SAN JUAN INTERNATIONAL AIRPORT, PR | $1.5M | -- | -$1.5M |