Tioconazole API from Mexico
Tioconazole, a 1-substituted imidazole antifungal under HTS 2933.29.4500, targets vaginal candidiasis through ergosterol binding. Its unfused imidazole ring defines its Chapter 29 chemical classification as a pharmaceutical drug substance.
Duty Rate — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Vaginal absorption profile data required; FDA specific concerns for mucosal APIs
• Preservative efficacy testing mandatory for multi-dose container closure systems
• pH stability profile (4.0-7.0 range) documentation prevents import delays