Flucytosine Micronized Powder from China
Flucytosine is a fluorinated aromatic pyrimidine antifungal agent, imported as micronized API powder. Falls under HTS 2933.59.80.00 for modified aromatic pyrimidine heterocycles per chapter note on halogenated derivatives. Used in pharmaceutical manufacturing.
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
• Particle size distribution certificate required for micronized grade to confirm specifications
• Halogen content declaration essential as chapter notes include fluorinated derivatives
• Segregate from other APIs during shipping to avoid cross-contamination claims