Aspirin Lysine Salt from Mexico
The lysine salt of acetylsalicylic acid maintains classification with parent acid per chapter note 4(C)(1). Covered under HTS 2918.29.65.00 via additional U.S. note 3 for pharmaceutical salts. Imported for soluble analgesic formulations.
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
• Include salt formation certificate linking to parent acetylsalicylic acid classification per note 4(C)
• Ensure water solubility doesn't trigger note (d) misclassification as aqueous solution
• FDA prior notice required; distinguish from finished injectables (3004)