p-Aminoacetophenone Hydrochloride from Mexico
p-Aminoacetophenone hydrochloride is the salt of an aromatic amino-ketone, classified under HTS 2922.39.2500 per chapter note classifying salts with the parent organic compound. It features a single ketone oxygen function and is listed under additional U.S. note 3. Primarily used in organic synthesis for dyes and pharmaceuticals.
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
• Include salt formation proof in technical file; ensure pH/stability data for customs valuation
• Pitfall: declaring separately from acid/phenol salts—chapter note mandates with organic base/acid last in order