8-Bromotheophylline from Mexico
8-Bromotheophylline serves as a pharmaceutical intermediate with halogenated xanthine structure, nitrogen heterocyclic only per chapter notes. Included in U.S. note 3 products for 2933.99.79.00. Used in synthesis of bronchodilators.
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
• Declare halogen content and provide halide analysis to confirm structure
• Use secondary containment packaging due to lachrymatory properties
• Include downstream synthesis declaration to qualify for intermediate status