Econazole Nitrate USP from Mexico
Econazole nitrate, a broad-spectrum imidazole antifungal drug, falls under HTS 2933.29.4500 due to its characteristic unfused imidazole ring structure. Used primarily in dermatological treatments for fungal infections of skin and nails.
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
• Provide polymorphic form characterization; nitrate salts prone to FDA scrutiny on crystal form stability
• Include forced degradation studies in submission; common detention cause is insufficient stability data
• Ensure proper nitrate content assay; over 0.1% impurities triggers import alert