Caffeine Anhydrous USP from Canada
Caffeine anhydrous is a purine alkaloid featuring pyrimidine rings, used in pharmaceuticals, energy products, and as a chemical standard. It is covered by HTS 2933.59.70.00 as an aromatic heterocyclic compound described in additional U.S. note 3 to section VI. The classification reflects its chemically defined structure.
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
• Submit USP certificate and batch analysis to confirm anhydrous form and purity above 99%
• Declare exact CAS number (58-08-2) on entry docs to match note 3 specifications
• Watch for contamination claims; test for heavy metals per pharmacopeia standards pre-shipment