Pyridine-3-carboxylic Acid (Nicotinic Acid) (CAS 59-67-6) from Canada
Nicotinic acid, or vitamin B3, is a pyridine derivative with a carboxylic acid at position 3, essential for human nutrition and pharmaceutical use. The pyridine ring structure dictates classification under this heading per Chapter 29 notes on acid functions. HTS 2933.31.00.00 applies to this pyridine compound.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• FDA prior notice required for food supplement use
• USP grade requires certificate of analysis for pharmacopeia compliance
• Avoid bulk packaging over 25kg to prevent mixture classification