Sulfapyridine from Canada
Sulfapyridine is a sulfonamide used historically for dermatitis herpetiformis and as an intermediate in sulfasalazine synthesis. It is covered under HTS 2935.90.75.00 due to its inclusion in additional U.S. note 3 to section VI for specific sulfonamides. Imported as a pure organic compound for medicinal applications.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Confirm reference to chapter notes on salts and derivatives; label with CAS number for identification; be cautious of historical use claims affecting regulatory status