dc-Saxitoxin Derivative from Mexico
dc-Saxitoxin (decarbamoyl saxitoxin) is a derivative of saxitoxin classified under HTS 2939.80.0010 as an alkaloid derivative. As a chemically defined structural analogue of saxitoxin, it remains in the specific saxitoxin subheading.
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
• Provide structural analysis confirming saxitoxin derivative status
• Dual-use documentation may be required for toxin research applications
• Smallest import quantities preferred due to select agent regulations