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
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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