Pyridine-3-Carboxylic Acid (Nicotinic Acid) from Mexico
Nicotinic acid, also known as vitamin B3, is a pyridine derivative used in nutritional supplements and pharmaceutical formulations. This bulk chemical powder is classified under HTS 2933.39.61.91 due to its unfused pyridine ring structure and inclusion in U.S. note 3 substances. It qualifies as a separate chemically defined organic compound per chapter notes.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6093.5%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Ensure USP/NF grade certification for food/pharma import compliance with FDA regulations
• Declare exact CAS number (59-67-6) and purity percentage on commercial invoice
• Monitor REACH/ TSCA registration status for environmental compliance