Tetramethylpyrazine from Mexico
A specific pyrazine derivative explicitly listed under HTS 2933.99.1200, featuring a six-membered aromatic nitrogen heterocycle. Used as a flavoring agent in food and in pharmaceutical formulations for circulatory disorders. Its precise chemical structure matches the tariff nomenclature.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6094.2%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
• FEMA GRAS status documentation for food flavor use
• Specify intended use (food vs pharma) on commercial invoice
• CoA required confirming synthetic origin vs natural extract