5-(2-Aminoethyl)-4-methylthiazole from Japan
Intermediate in thiamine synthesis featuring substituted aromatic thiazole ring with aminoethyl side chain. Classified HTS 2934.10.20.00 as principal thiazole heterocycle per Chapter 29 last-in-order rule. Chemically defined for pharmaceutical production.
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
• Reference to thiamine synthesis pathway supports heterocyclic classification
• GC-MS analysis verifying thiazole purity essential
• Distinguish from polymer precursors via molecular weight certification