N-Bromosuccinimide (NBS) from Canada
N-Bromosuccinimide is a brominated derivative of succinimide used as a brominating and oxidizing agent in organic synthesis. It qualifies under HTS 2925.19.91.00 as an imide derivative (not halogenated in the sense excluding it from heading per chapter notes). Essential for allylic bromination in pharmaceutical production.
Duty Rate — Canada → United States
110%
Rate breakdown
9903.04.6096.3%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
• Classify as UN 3261, Corrosive Solid, pH 3-4; test samples to confirm proper DOT shipping name
• Avoid bulk packaging >25kg; retail laboratory packs (<1kg) reduce scrutiny but verify end-use declaration