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
6.5%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Include stability studies for sodium salt form and pH specifications
• Provide polymorphic form certification (usually Form I)