Dextropropoxyphene Napsylate from Germany
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 — Germany → United States
25%
Rate breakdown
9903.04.6215%Patented pharmaceutical articles that are the product of Japan, of a European Union member country, of South Korea, of Switzerland, or of Liechtenstein as provided for in subdivisions (c) and (f) of U.S. note 40 to this subchapter
9903.05.3910%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.97, articles the product of a member state of the European Union, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 10 percent, as provided for in U.S. note 52 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