Isocamphoric Acid from Mexico
Isocamphoric acid is a stereoisomer of camphoric acid used in resolution of racemates. Classified under HTS 2916.20.50.00 as other cyclanic monocarboxylic acid per chapter isomer rules.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6096.3%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
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Specify optical rotation in documentation; enantiopure forms have different regulatory status; batch purity certificates mandatory