Limaprost Alfa from Canada
Limaprost alfa, a synthetic prostaglandin E1 derivative, treats peripheral vascular disease. Falls under HTS 2937.50.00.00 as modified prostaglandin with hormonal activity. Alfa-dextran complex classifies as derivative.
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
• Dextran complex classifies with parent prostaglandin; document host-guest chemistry
• Primarily Japanese pharmaceutical; validate PMDA vs
• FDA specifications
• Vascular smooth muscle assay data confirms primary hormonal mechanism