2-Aminothiazole from Mexico
2-Aminothiazole is an aromatic heterocyclic compound containing an unfused thiazole ring with an amino group at the 2-position. It falls under HTS 2934.10.20.00 as an aromatic thiazole derivative used primarily as a pharmaceutical intermediate. This chemically defined organic compound meets Chapter 29 requirements for separate classification.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6093.5%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide detailed chemical analysis certificates confirming thiazole ring structure and aromatic nature to avoid reclassification
• Ensure COA (Certificate of Analysis) specifies purity levels as impurities may affect Chapter 29 eligibility
• Declare as 'other aromatic thiazole compounds' to distinguish from fused ring structures in 2934.99