Ethionamide from Mexico
Ethionamide, a thioamide derivative of pyridine-2-carboxylic acid, treats multidrug-resistant tuberculosis. Falls under HTS 2933.39.41.00 for its unfused pyridine ring and drug classification in Chapter 29. Bulk API form used in pharmaceutical manufacturing.
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
• Sulfur content verification via elemental analysis to confirm thioamide pyridine structure
• Document MDR-TB indication to support drug status versus chemical intermediate
• Odoriferous; include safety data sheets addressing Chapter 29 note (g)