Trimethoprim Lactate Soluble Powder from Canada
Trimethoprim lactate is the soluble salt form of the anti-infective trimethoprim, falling under HTS 2933.59.22.00 per Chapter notes on salt classification with the base. Used in veterinary water medications for respiratory infections in pigs and calves. The aromatic pyrimidine structure qualifies it as a modified aromatic drug.
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
• Provide salt confirmation via NMR spectrum; pure trimethoprim base may shift to different purity codes
• Include solubility test data (>50mg/ml) to distinguish from insoluble forms under same heading
• Register with FDA CVM before import; unlabeled powders risk quarantine as unapproved new animal drugs