Penicillamine from Mexico
D-Penicillamine, a sulfhydryl-containing amino acid analog, classified under HTS 2930.90.4950 as organo-sulfur acid. Features thiol group with direct C-S bond; used primarily as chelating agent for Wilson's disease and rheumatoid arthritis treatment. Meets chemically defined compound requirements.
Duty Rate — Mexico → United States
14.2%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Submit USP/NF specifications and chiral purity certificate (D-isomer)
• Include stability data if stabilizer added per Chapter 29(f)
• Declare therapeutic end-use in FDA documentation but maintain bulk chemical HTS