N-Bromosuccinimide (NBS) from Mexico
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 — Mexico → United States
3.7%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 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