Saxitoxin with Stabilizer from Mexico
Saxitoxin containing added stabilizers necessary for preservation falls under HTS 2939.80.0010 per Chapter 29 note 2(f). Stabilizers don't change its nature as a chemically defined alkaloid.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6093.5%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• List stabilizer composition and validate as necessary for preservation only
• Ensure additives don't render product for specific use beyond Chapter 29 scope
• Batch testing certificates required for purity confirmation