Chlorpheniramine Maleate from Canada
Chlorpheniramine is an aromatic amino-compound with ether oxygen function, an antihistamine. Classified HTS 2922.50.4000 as aromatic oxygen-function amino-compound. Maleate salt follows base per Chapter notes on organic salts.
Duty Rate — Canada → United States
6.5%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Provide chiral purity certificates; ensure GMP compliance for pharma intermediates; watch for country-specific antihistamine controls