Valproic Acid 99% Pure from Mexico
99% pure valproic acid with minimal impurities, suitable for high-end pharmaceutical intermediates. Explicitly covered as valproic acid under HTS 2915.90.14.00 within saturated acyclic monocarboxylic acids.
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
• Submit HPLC purity chromatograms; comply with REACH if EU origin
• Pitfall: impurity levels affecting duty-free claims under trade agreements