Isonicotinic Acid Hydrazide (INH, Isoniazid Bulk) from Canada
Isoniazid is a pyridine-4-carboxylic acid hydrazide used as bulk active for tuberculosis treatment. Classified in HTS 2933.39.92.00 as 'other' unfused pyridine derivative per Chapter 29 notes for chemically defined compounds. Distinguish from finished pharmaceutical dosage forms.
Duty Rate — Canada → 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
9903.05.2910%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
• FDA bulk drug substance registration required; provide USP certificate and hydrazide confirmation
• Not for direct patient use labeling