1,8-Naphthyridine from Japan
1,8-Naphthyridine is a rigid bicyclic heterocyclic compound with nitrogen atoms at positions 1 and 8, used in metal coordination chemistry. Falls under HTS 2934.99.90.01 as other heterocyclic nitrogen compounds not elsewhere specified.
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
• Declare molecular formula C8H6N2 precisely to match tariff description
• Include stability data showing no explosive peroxides formation
• Pre-clear with CBP chemistry lab if novel structure raises classification questions