Sulfanilamide from Mexico
Sulfanilamide is the parent compound of the sulfonamide class of antibiotics, historically significant as the first synthetic antibacterial drug. It classifies under HTS 2935.90.60.00 as a chemically defined sulfonamide with established pharmaceutical applications. The simple p-aminobenzenesulfonamide structure defines the entire sulfonamide therapeutic class.
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
• Include reference to historical USP monograph even for research quantities
• Document intended research/pharmaceutical use to distinguish from dye intermediates
• Verify absence of heavy metals per current pharmacopeial standards