Procainamide Hydrochloride from Mexico
Procainamide hydrochloride is an aromatic cyclic amide derivative used as an antiarrhythmic agent to treat irregular heartbeats. It falls under HTS 2924.29.71.00 as a chemically defined aromatic cyclic amide product listed in additional U.S. note 3 to section VI. This classification applies to its carboxyamide-function structure and pharmaceutical-grade purity.
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
• Obtain FDA Drug Master File and ensure compliance with US pharmacopeia standards for active pharmaceutical ingredients
• Provide certificate of analysis confirming purity >99% and absence of impurities to avoid reclassification
• Declare as bulk API only; finished dosage forms may require different documentation under Chapter 30