Pyridine-3-Carboxylic Acid (Niacin) from Canada
Niacin, or vitamin B3, is a pyridine derivative used as an essential drug for treating pellagra and managing dyslipidemia. Classified under HTS 2933.39.41.00 due to its unfused pyridine ring and status as a pharmaceutical drug within Chapter 29. Bulk USP-grade niacin powder qualifies as a chemically defined heterocyclic compound.
Duty Rate — Canada → United States
100%
Rate breakdown
9903.04.6093.5%Pharmaceuticals: 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/NF Certificate of Analysis verifying ≥99% purity to maintain drug classification under Chapter 29
• Include pharmacological end-use documentation to distinguish from food-grade niacin classified elsewhere
• Avoid retail packaging; bulk drums only, as consumer packs shift to Chapter 30 medicaments