DL-Norephedrine Sulfate from Mexico
DL-norephedrine sulfate is the sulfate salt of the racemic norephedrine alkaloid, reproduced by synthesis from ephedra derivatives. Falls under HTS 2939.44.00.00 as a salt of norephedrine per Chapter 29 provisions for alkaloid derivatives. Used in research and veterinary decongestant formulations.
Duty Rate — Mexico → United States
100%
Rate breakdown
9903.04.60100%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
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• Provide chiral purity analysis if claiming specific enantiomer; ensure veterinary vs human use documentation
• Sulfate salts may require additional stability testing certificates