Omoconazole Pharmaceutical Reference Standard from Mexico
Omoconazole, a development-stage imidazole antifungal drug substance under HTS 2933.29.4500, features the unfused imidazole ring characteristic of this tariff provision. Used in clinical trials and analytical reference standards.
Duty Rate — Mexico → United States
100%
Rate breakdown
9903.04.6096.3%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 Investigational New Drug (IND) number and protocol for clinical trial materials
• Reference standard purity >99.5% required; provide HPLC chromatograms with all impurities identified
• Batch analytical comparability data essential between manufacturing sites