Pyridine-3-Carboxylic Acid (Niacin) from China
Pyridine-3-carboxylic acid, commonly known as niacin or vitamin B3, is a chemically defined compound with an unfused pyridine ring used in nutritional supplements and pharmaceuticals. Classified under HTS 2933.39.61 per additional U.S. note 3 to section VI for specific pyridine derivatives. It's imported as a bulk API for fortification of foods and multivitamins.
Duty Rate — China → United States
19%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide USP or pharmacopeia certificates confirming 99%+ purity to expedite FDA clearance
• Label shipments clearly as 'food additive' or 'pharmaceutical intermediate' to avoid agricultural inspections
• Check for anti-dumping duties on Chinese-origin niacin and source from quota-exempt countries