Valproic Acid 99% Pure from Canada
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 — Canada → United States
100%
Rate breakdown
9903.04.6095.8%Pharmaceuticals Annex IV: patented pharma articles — 100% floor rate
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Submit HPLC purity chromatograms; comply with REACH if EU origin
• Pitfall: impurity levels affecting duty-free claims under trade agreements