Pyridine-3-Carboxylic Acid (Niacin) from Canada
Niacin, or vitamin B3, is a pyridine derivative with a carboxylic acid substituent, featuring a single nitrogen hetero-atom in its aromatic ring. Falls under HTS 2933.99.82 as other aromatic nitrogen heterocycles. Essential nutrient used in supplements and pharmaceuticals.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Include USP certificates for food/pharma grade; structure declaration prevents misclassification as vitamin prep; check for country-specific quotas