1,8-Naphthyridine from Japan
1,8-Naphthyridine is a rigid bicyclic aromatic system used in coordination chemistry and antibiotic synthesis. Classified under HTS 2934.99.44.00 as other aromatic heterocyclic compounds. Its chelating properties make it valuable for metal complex formation.
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
• Provide molecular formula C8H6N2 and spectroscopic data for CBP verification
• Label containers with GHS hazard pictograms for pyridine-like toxicity
• Import as >98% purity to qualify as chemically defined compound