Pharma-Grade Tetramethylguanidine Base from Mexico
Pharmaceutical-grade tetramethylguanidine meeting USP standards, under HTS 2925.29.70.00 as imine derivative. Chemically defined for drug synthesis intermediates. Excludes immunological products per chapter note.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Obtain FDA import alert clearance if for drug manufacture
• Certify GMP compliance in COA for pharma use
• Distinguish from finished APIs which may go to Chapter 30