Indoline from Canada
The fully saturated analogue of indole, explicitly listed under HTS 2933.99.1200 as a modified aromatic nitrogen heterocycle. Used as dye intermediate and pharmaceutical building block. Its bicyclic structure with nitrogen hetero-atom qualifies precisely.
Duty Rate — Canada → United States
110%
Rate breakdown
9903.04.6094.2%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
• Oxidation stabilizer presence must be documented
• Dye vs pharma end-use affects documentation requirements
• Dark storage/handling instructions required