Dextropropoxyphene Napsylate from China
Dextropropoxyphene napsylate is a water-soluble salt of dextropropoxyphene, formerly used in combination pain medications like Darvon-N. Classified under HTS 2922.14.00.00 due to chapter notes specifying salts of this INN compound as oxygen-function amino-alcohols.
Duty Rate — China → United States
0%
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
• Verify salt identity via HPLC testing to distinguish from hydrochloride and ensure correct HTS classification
• File prior notice with FDA for chemical imports and monitor DEA scheduling (now Schedule II equivalent)
• Avoid bulk packaging over stabilizer limits per chapter note (f) to prevent reclassification as mixtures