Sulfapyridine from China
Sulfapyridine, a sulfonamide antibiotic with pyridine ring, treats dermatitis herpetiformis. Classified HTS 2933.39.41.00 as pyridine-containing drug despite sulfonamide group, per Chapter 29 numerical order rule. Bulk API for dermatological applications.
Duty Rate — China → United States
100%
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
9903.05.900%Articles of aluminum, of steel or of copper or derivative aluminum or steel articles; passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; parts of passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; medium- and heavy-duty vehicles; parts of medium- and heavy-duty vehicles; wood products; patented pharmaceutical articles; and semiconductor articles, as provided in subdivision (f) of U.S. note 52 to this subchapter
Import Tips
• Sulfonation documentation confirming pyridine attachment per Chapter Note 4
• Antibiotic sensitivity testing supporting therapeutic classification
• Monitor for veterinary vs human grade distinctions in end-use statements