Flucytosine API Powder from Canada
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 — Canada → United States
3.7%
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 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