Sodium Valproate Precursor Acid from Mexico
Valproic acid serving as direct precursor to sodium valproate for migraine prophylaxis. Classified specifically as valproic acid in HTS 2915.90.14.00, a non-halogenated saturated acyclic monocarboxylic acid.
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
• Cross-reference with salt form imports; validate chain of custody docs
• Common issue: temperature control during shipping to maintain integrity