Cinnoline from China
Cinnoline is a bicyclic aromatic heterocycle with adjacent nitrogen atoms in the six-membered ring. Falls under HTS 2934.99.44.00 as other aromatic heterocyclic compound. Used in pharmaceutical research for anti-inflammatory agents.
Duty Rate — China → United States
100%
Rate breakdown
9903.04.6093.5%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
• Rare compound - provide peer-reviewed literature references for CBP
• Unstable to light - specify amber packaging requirements
• Molecular weight 130.14 g/mol confirms structure