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
112.5%
Rate breakdown
9903.04.60100%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
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