Casein-Glutathione Conjugate from China
Casein-glutathione conjugate covalently links antioxidant tripeptide to casein for functional beverages and oxidative stress protection. Classified HTS 3501.90.60.00 as conjugated protein derivative beyond simple mixtures. Enhances stability of labile glutathione.
Duty Rate — China → United States
20%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
9903.88.157.5%Except as provided in headings 9903.88.39, 9903.88.42, 9903.88.44, 9903.88.47, 9903.88.49, 9903.88.51, 9903.88.53, 9903.88.55, 9903.88.57, 9903.88.65, 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(r) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(s)
Import Tips
• Use mass spec data confirming covalent conjugation over physical blend
• Validate antioxidant capacity via ORAC/FRAP assays for claims support
• Ensure cold chain <8°C for glutathione stability during import