Girard's Reagent T from Mexico
Girard's Reagent T (trimethylammoniumacetohydrazide chloride) contains hydrazone and quaternary ammonium nitrogen functions, classified under HTS 2929.90.50.95. Used in steroid analysis and carbonyl derivatization.
Duty Rate — Mexico → 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
9903.05.5510%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
• Classify salts with organic compounds per Chapter 29 note (C)(1) with parent nitrogen compound
• Hygroscopic; specify storage conditions and provide stability data
• Avoid classification as quaternary ammonium compound (Chapter 29 note excludes from 2930-2931)