Flavine Adenine Dinucleotide (FAD) Sodium Salt from Canada
FAD sodium salt is a redox cofactor in enzymatic reactions, containing both flavin and adenine moieties. Falls under HTS 2934.99.39.00 as specified aromatic heterocyclic compound in U.S. note 3.
Duty Rate — Canada → United States
100%
Rate breakdown
9903.04.6093.5%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
• Include absorbance ratio (A450/A260) verification for purity assessment
• Ship light-protected in amber containers to prevent photodegradation
• Provide CoA with lot-specific activity measurements