Pharmaceutical Grade Cathine (S)-Cathine Tartrate from Mexico
(S)-Cathine tartrate is the tartrate salt of the specific enantiomer of cathine, a synthetic reproduction of the natural ephedra alkaloid, meeting USP standards for drug intermediates. It is classified in HTS 2939.43.00.00 as a cathine salt, adhering to chapter provisions for chemically defined organic compounds and their salts. Used exclusively in controlled pharmaceutical manufacturing.
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
• Provide chiral purity documentation (e.g
• >99% ee) and stereoisomer identification to confirm HTS specificity
• Comply with Controlled Substances Act import permits; declare as 'bulk drug substance' on CBP forms
• Use child-resistant packaging if retail-distributed, though bulk chemical imports typically require industrial labeling