Tolpropamine Hydrochloride from Mexico
Tolpropamine hydrochloride is an antihistamine containing aromatic amine functionality used for allergy relief. Classified under HTS 2921.49.43.00 as a pharmaceutical drug. Features diphenylmethylamine structure typical of first-generation antihistamines.
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 stability studies for antihistamine formulations
• Verify compliance with FDA OTC monograph if applicable
• Document impurity profile per ICH guidelines