5-Amino-2-hydroxyacetophenone from Mexico
5-Amino-2-hydroxyacetophenone contains amino, hydroxy, and ketone functions but classified by single principal ketone oxygen function under 2922.39.4500. Aromatic structure with multiple potential functions follows chapter priority rules.
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
• Chapter note 3 requires latest numerical heading for multi-function compounds
• Tautomer analysis may be needed for hydroxy-amino proximity
• pH-sensitive; specify anhydrous form