Pyrazinamide USP Antituberculosis Drug from Canada
Pyrazinamide, a pyrazine carboxamide derivative, is explicitly listed in HTS 2933.99.4200 as an anti-infective pharmaceutical. This first-line tuberculosis treatment is imported as pure USP powder for tablet manufacturing. Its aromatic heterocyclic structure with nitrogen hetero-atoms defines its Chapter 29 classification.
Duty Rate — Canada → United States
110%
Rate breakdown
9903.04.60100%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
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Require DMF (Drug Master File) and bioequivalence data for API imports into US tablet production
• TB drugs face heightened FDA scrutiny; ensure GMP certification from manufacturing facility
• Confirm crystal form (polymorph) matches USP monograph to avoid reclassification issues