Succinimide from Canada
Succinimide is a five-membered ring aromatic imide used in pharmaceutical synthesis and as a polymer modifier. Classified in HTS 2925.19.42.00 as 'other' aromatic imide. Its cyclic imide structure qualifies under heading 2925 per Chapter 29 definitions.
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
• Certify ring structure via IR spectroscopy; declare cyclic vs acyclic form; bulk packaging prevents retail classification issues