Naproxen Sodium from Mexico
Naproxen sodium is the sodium salt of an aromatic carboxylic acid (2-methoxy-4-(2-methylpropyl)propanoic acid) used as NSAID. Classified in HTS 2918.99.3000 per chapter note C(1) for inorganic salts of organic acid-function compounds following the acid classification. Aromatic structure with oxygen function qualifies.
Duty Rate — Mexico → United States
100%
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
9903.05.900%Articles of aluminum, of steel or of copper or derivative aluminum or steel articles; passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; parts of passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; medium- and heavy-duty vehicles; parts of medium- and heavy-duty vehicles; wood products; patented pharmaceutical articles; and semiconductor articles, as provided in subdivision (f) of U.S. note 52 to this subchapter
Import Tips
• Include stability studies for sodium salt form and pH specifications
• Provide polymorphic form certification (usually Form I)