Promethazine Hydrochloride USP from Mexico
Promethazine hydrochloride is a phenothiazine derivative used as an antihistamine, antiemetic, and sedative, containing a phenothiazine ring-system. It falls under HTS 2934.30.43.00 as a specific product listed in additional U.S. note 3 to section VI for nucleic acids, salts, or other heterocyclic compounds with this ring structure. This classification applies to its chemically defined heterocyclic nature without further fusion.
Duty Rate — Mexico → 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
• Verify purity certificates and USP compliance documentation to meet FDA import requirements; declare exact chemical composition to avoid reclassification; check for additional note 3 restrictions under Section VI