Captopril from Canada
Captopril, (2S)-1-[(2S)-3-mercapto-2-methylpropionyl]-L-proline, contains a mercaptocarboxylic acid side chain. Despite complex structure, classified under HTS 2930.90.4920 as its mercapto acid functionality defines the organo-sulfur nature per Chapter 29. Pharmaceutical API for hypertension treatment.
Duty Rate — Canada → United States
110%
Rate breakdown
9903.04.6095.8%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 DMF and USP certificate mandatory; verify chiral purity >99.5% ee
• Controlled substance precursor monitoring; DEA import permit may apply
• Classify bulk API only; tablets move to Chapter 30 pharmaceuticals