9-Fluorenone-2-Carboxylic Acid from Mexico
A fluorenone derivative with carboxylic acid at position 2, used in advanced materials and OLED synthesis. Falls under HTS 2918.30.2500 as an aromatic ketone-carboxylic acid specifically referenced in additional U.S. note 3 to section VI.
Duty Rate — Mexico → 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
9903.05.5510%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
• HPLC purity certificate mandatory; fluorenone impurities can shift classification
• Special packaging for light-sensitive material; declare as 'organic semiconductor intermediate'
• Avoid bulk powder entry without anti-caking agent justification per chapter note (f)