Sulfapyridine Silver Salt from Mexico
Silver sulfadiazine 1% cream prevents burn wound infections; silver ions potentiate sulfonamide. HTS 2935.90.4800 classification as sulfonamide anti-infective coordination compound per Chapter 29 note (C)(3). Poorly absorbed for topical action.
Duty Rate — Mexico → 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
• Silver ion release profile validates antibacterial synergy
• Coordination compound documentation prevents Chapter 28 metal classification
• Cream stability data despite light-induced discoloration