Flucytosine API Powder from Mexico
Flucytosine is a fluorinated pyrimidine antifungal drug with nitrogen hetero-atoms only in its ring structure. Classified in HTS 2933.59.59.00 as an 'other' drug under pyrimidine compounds. Excludes halogen emphasis that might shift classification.
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
• Provide NMR spectrum confirming pyrimidine ring integrity despite fluorination
• Controlled substance documentation may be required for antifungal APIs
• Segregate from dosage forms to maintain Chapter 29 chemical classification