4-Dimethylaminopyridine (DMAP) from Canada
DMAP is a pyridine derivative serving as a nucleophilic catalyst in organic synthesis and peptide coupling reactions. Classified under HTS 2933.39.61.91 for its unfused pyridine ring and status as a controlled research chemical under U.S. note 3. Meets chapter 29 criteria as a separate chemically defined compound without excluded additives.
Duty Rate — Canada → United States
6.5%
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
• Include Safety Data Sheet (SDS) detailing hazards (corrosive, toxic) and proper UN packaging
• Verify end-use declaration to avoid anti-dumping scrutiny on research chemicals
• Check state-level chemical handling permits beyond federal HTS requirements