Sulfisoxazole Acetyl from China
Sulfisoxazole acetyl is the acetylated prodrug form of sulfisoxazole, a short-acting sulfonamide antibiotic effective against urinary tract infections. It qualifies under HTS 2935.90.4800 as a sulfonamide anti-infective per Chapter 29 structure, where the acetyl group doesn't alter primary sulfonamide classification. Used primarily in pediatric formulations.
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
• Include hydrolysis studies demonstrating conversion to active sulfisoxazole for anti-infective classification justification
• Verify no Chapter 30 exclusions apply; must be bulk API, not formulated pediatric suspension