Tafluprost from Canada
Tafluprost, a fluorinated prostaglandin F2α analogue, is used in glaucoma treatment with preserved formulations. Falls under HTS 2937.50.00.00 as a halogenated prostaglandin derivative per Chapter 29 notes. Primary hormonal mechanism confirmed by receptor binding studies.
Duty Rate — Canada → United States
100%
Rate breakdown
9903.04.60100%Pharmaceuticals: patented pharma articles — 100% floor rate
9903.05.860%Universal product exemption (U.S. note 52(b))
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
• Document fluorine position via NMR; halogenated derivatives follow parent heading
• Preservative-free claims require manufacturing process validation
• Differentiate from unfluorinated prostaglandins via complete spectral data