Synthetic Saxitoxin from Mexico
Synthetic saxitoxin is a laboratory-reproduced version of the natural paralytic alkaloid toxin, explicitly covered under HTS 2939.80.0010 as alkaloids reproduced by synthesis. Its chemical structure matches natural saxitoxin, qualifying it as a separate chemically defined organic compound.
Duty Rate — Mexico → 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
• Submit synthesis method documentation to distinguish from natural extracts
• Include Material Safety Data Sheet (MSDS) detailing toxicity and handling requirements
• Declare exact quantity in micrograms due to extreme potency; avoid bulk shipments