Pharma-Grade Tetramethylguanidine Base from Canada
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 — Canada → United States
10%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
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