Immobilized Penicillin G Amidase Beads from Mexico
Penicillin G amidase immobilized on agarose or silica beads for continuous flow biocatalysis in pharmaceutical manufacturing. Still classified under HTS 3507.90.20.00 as the principal enzyme is specifically Penicillin G amidase, not reclassified by immobilization.
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
• Specify immobilization matrix in documentation to distinguish from pure enzymes and avoid parts classifications
• Comply with EPA biotech import permits if beads contain recombinant material
• Test for leaching stability to prevent reclassification as a composite chemical good