Isoindole-1,3-dione from Germany
Isoindole-1,3-dione, a structural isomer of phthalimide, is an aromatic fused-ring lactam with nitrogen hetero-atom. It is imported under HTS 2933.79.1500 as other aromatic lactams for use in resins and dyes. Classification follows Chapter 29's rule for last-in-order heterocyclic nitrogen compounds.
Duty Rate — Germany → United States
18.5%
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
9903.05.3910%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
• Cross-reference with phthalimide rulings for consistency; declare exact isomer to avoid generic amide classification