Levobupivacaine Hydrochloride from Mexico
Levobupivacaine hydrochloride is the S-enantiomer of bupivacaine, offering reduced cardiotoxicity. Classified under HTS 2924.29.71.00 as an aromatic cyclic amide per additional U.S. note 3. Meets chapter requirements for separate chemically defined stereoisomers.
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
• Provide chiral HPLC analysis confirming >99% enantiomeric excess
• Include comparative toxicology data vs. racemic bupivacaine
• Declare specific rotation value for optical purity verification