Sulfapyridine from China
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 — China → United States
112.5%
Rate breakdown
9903.04.6093.5%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
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