Chlorpheniramine Maleate from China
Chlorpheniramine maleate is an alkylamine antihistamine with modified aromatic structure used for allergies and sometimes nausea. Imported under HTS 2933.59.21.00 as it qualifies among aromatic antihistamines per subheading scope. Chapter notes allow salt classification with acid/base.
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
• Maleate salt declared per note C(2)—base last in order; provide chiral purity data
• Common error: packaging implying retail (Chapter 32 exclusion)
• Temperature-controlled shipping required