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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