</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →

Ethyl 6,7,8-Trifluoro-1,4-Dihydro-4-Oxo-3-Quinolinecarboxylate from China

This is a chemically defined heterocyclic compound containing a quinoline ring system with nitrogen hetero-atom and trifluoro substitutions, specifically matching HTS 2933.49.17.00. It serves as a key intermediate in synthesizing fluoroquinolone antibiotics like norfloxacin. Classified here due to its precise chemical structure as a non-fused quinoline derivative.

Duty Rate — China → United States

100%

Rate breakdown

9903.04.60100%Pharmaceuticals Annex IV: patented pharma articles — 100% floor rate
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)

Import Tips

Provide detailed chemical analysis certificates (COA) confirming purity and structure match to avoid misclassification

Declare exact CAS number if available and stabilizer content; impurities may affect duty if exceeding chapter note limits

Comply with TSCA pre-notice requirements for new chemical substances when importing into the US