Thiamine Mononitrate USP from Canada
Thiamine mononitrate is a synthetic form of vitamin B1 containing an unfused thiazole ring in its aromatic structure, classified under HTS 2934.10.10.00 as a heterocyclic compound described in additional U.S. note 3 to section VI. It is primarily used as a nutritional supplement in fortified foods and pharmaceuticals.
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
• Verify USP or EP grade certification and provide Certificate of Analysis (CoA) confirming thiazole structure and purity >98%
• Ensure proper labeling as 'Products described in additional U.S. note 3 to section VI' for CBP clearance
• Avoid misclassification as finished vitamins (Chapter 30); ship as bulk chemical with stabilizer if needed