D(-)-p-Hydroxyphenylglycine Tromethamine Salt from Canada
Tromethamine (TRIS) salt of d(-)-p-Hydroxyphenylglycine, classified in HTS 2922.50.11.00 per note (C)(2) as salt between organic acid and base, last in numerical order. Used for pH-buffered pharma formulations.
Duty Rate — Canada → United States
110%
Rate breakdown
9903.04.6093.5%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• ,pH specification critical for intended use validation
• TRIS content may require separate TSCA if >threshold