3,3-Dimethylglutaric Acid from Canada
3,3-Dimethylglutaric acid, a geminally substituted dicarboxylic acid for pharmaceutical synthesis. Classified under HTS 2917.19.70.50 as acyclic polycarboxylic acid 'other'. Specific substitution pattern but remains acyclic per definition.
Duty Rate — Canada → United States
110%
Rate breakdown
9903.04.6096%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
• Provide synthetic route disclosure for pharma customers
• Chiral center requires optical rotation specification
• Stability data essential due to beta-branching