2935.90.30.00/Sulfamethazine Sodium Salt/Mexico

Sulfamethazine Sodium Salt from Mexico

Sulfamethazine sodium is the sodium salt form of sulfamethazine, a synthetic sulfonamide antibiotic used primarily in veterinary medicine for treating bacterial infections in livestock. It falls under HTS 2935.90.30.00 as a sulfonamide classified as an anti-infective drug, specifically sulfamethazine, meeting Chapter 29 requirements for chemically defined organic compounds with sulfur directly linked to carbon. This form enhances solubility for easier administration in animal feed or injections.

Duty Rate — Mexico → 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

9903.05.5510%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

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Import Tips

• Verify FDA veterinary drug approval and provide Certificate of Analysis confirming purity >98%; ensure proper labeling as 'for veterinary use only' to avoid human drug classification

• Common pitfall: misdeclaring as generic sulfonamide without specifying sulfamethazine, leading to wrong subheading