Valproic Acid Research Grade from Mexico
High-purity research-grade valproic acid for lab studies on histone deacetylase inhibition. Meets chapter 29 criteria as a chemically defined saturated monocarboxylic acid under HTS 2915.90.14.00.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6095.8%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 end-use statement for research exemption; small quantities may qualify for simplified entry
• Pitfall: lab chemicals often scrutinized—ensure no retail packing