4-Methylthiazole from Mexico
4-Methylthiazole is a simple aromatic thiazole ring with a methyl substituent at the 4-position, used in flavor synthesis and pharmaceuticals. Classified under HTS 2934.10.20.00 as 'other' aromatic unfused thiazole compounds. Meets Chapter 29 criteria for chemically defined heterocycles.
Duty Rate — Mexico → United States
16.5%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• CAS number (693-95-8) documentation essential for CBP verification of thiazole identity
• Avoid bulk packaging that suggests mixture classification under Chapter 38
• Label clearly as 'pure 4-methylthiazole' to prevent misclassification as flavor preparation