Naproxen Sodium from China
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 — China → United States
19%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Include stability studies for sodium salt form and pH specifications
• Provide polymorphic form certification (usually Form I)