Diphenhydramine Hydrochloride from Canada
Diphenhydramine HCl, an ethanolamine derivative with aromatic oxygen-function amino structure, functions as an antihistamine drug. HTS 2922.49.26.00 covers it as an 'other' aromatic amino-acid salt drug. Chapter 29(B) supports ester/alcohol salt placement here.
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 BP/USP monograph compliance certificate (CAS 147-24-0)
• Declare exact isomer purity to fit Chapter 29(b) mixtures exclusion
• Avoid bulk packaging over 25kg to prevent industrial chemical scrutiny