Chlorpheniramine Maleate USP from Japan
This antihistamine drug is a maleate salt of an amino-phenol ether, qualifying as a drug under oxygen-function amino-compounds. Chapter notes confirm salts classify with parent compounds. Used in allergy medications.
Duty Rate — Japan → 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
• Maleate salt ratio documentation required; test for polymorph form
• Common error: classifying with base under different subheading