Penicillin G Amidase 100,000 U/g Preparation from China
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 — China → United States
37.5%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
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