Thiazole-4-Carboxylic Acid Ethyl Ester from Mexico
This aromatic thiazole derivative with ester functionality meets HTS 2934.10.10.00 criteria per U.S. note 3. Serves as intermediate for pharmaceutical and agrochemical synthesis.
Duty Rate — Mexico → United States
6.5%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Provide NMR/GC-MS spectra confirming thiazole ring integrity and ester purity
• Use HDPE drums with nitrogen blanketing for oxidative-sensitive compounds
• Include downstream synthesis declaration to justify chemical intermediate status