o-Diquat Dibromide USP/Pharmaceutical Grade from Canada
High-purity o-diquat dibromide meeting USP standards for pharmaceutical research applications. Classified under HTS 2933.99.1600 as the specific heterocyclic pesticide compound despite research use claims. Used in toxicology studies and herbicide efficacy research.
Duty Rate — Canada → United States
110%
Rate breakdown
9903.04.60100%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
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide Certificate of Analysis (CoA) showing >99% purity and USP compliance to distinguish from technical grade
• End-use statement clarifying research purposes may be required to avoid FIFRA pesticide restrictions
• Segregate from formulated products during storage to prevent cross-contamination classification issues