Phtalazinone from Japan
Phthalazinone is a heterocyclic aromatic imide used in pharmaceutical research and dye chemistry. Falls under HTS 2925.19.42.00 as 'other' aromatic imide. Fused ring imide structure per heading 2925.
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
• Heterocycle ring system NMR confirmation; batch purity analysis; research chemical import permits if applicable