Penicillin G Amidase 100,000 U/g Preparation from Mexico
A high-activity (100,000 units per gram) preparation of Penicillin G amidase in stabilized powder form for large-scale fermentation processes in antibiotic production. HTS 3507.90.20.00 applies specifically to this named enzyme, distinct from general dextrins or hardened proteins per chapter exclusions.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Include enzyme activity unit declarations certified by ISO-accredited labs to support valuation and classification claims
• Avoid bulk packaging over 25kg without secondary containment, as CBP flags large biotech shipments for biosafety review
• Cross-check against Chapter 30 exclusions by confirming it's not a blood fraction or therapeutic prep