Promethazine Hydrochloride from Canada
Promethazine hydrochloride is a phenothiazine derivative used as an antihistamine, antiemetic, and sedative. It contains a phenothiazine ring-system that is not further fused with other rings, qualifying it for classification under HTS 2934.30.5000 as 'other' compounds with this specific structure.
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 certificates of analysis confirming chemical purity and phenothiazine structure to avoid reclassification
• Ensure FDA registration and drug master files are complete for pharmaceutical imports; common pitfall is missing impurity declarations
• Label shipments with exact CAS number (58-88-8) and batch details to facilitate customs clearance