Pyridine-3-Carboxylic Acid (Niacin) from Mexico
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 — Mexico → United States
16.5%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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