Thiazole-4-Carboxylic Acid from Japan
Thiazole-4-carboxylic acid features an aromatic thiazole ring with carboxylic acid at position 4, used in pharmaceutical synthesis. HTS 2934.10.20.00 as 'other' aromatic thiazole per rule that acid-function compounds classified by heterocyclic parent. Chapter 29 numerical precedence applies.
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
• Titration analysis confirming carboxylic acid content on COA
• Specify 'heterocyclic acid' nomenclature on entry documents
• Avoid sodium salt form which follows acid classification per Chapter note 3(C)