Sodium 7-Nitronaphth[1,2]oxadiazole-5-sulfonate from Japan
The sodium salt form of 7-nitronaphth[1,2]oxadiazole-5-sulfonic acid, explicitly covered by HTS 2934.99.06.00. This water-soluble salt maintains the core heterocyclic structure with sulfonate functionality, used in aqueous dye coupling processes and as a reagent in organic synthesis.
Duty Rate — Japan → United States
21%
Rate breakdown
9903.04.628.5%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
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include salt formation verification via NMR spectroscopy in documentation
• Check for water content as excessive hydration might affect classification purity requirements
• Confirm counterion is sodium only; other metal salts may require different subheadings