L-Arginine Base from China
L-Arginine is a conditionally essential amino acid with guanidino group, falling under oxygen-function amino-acids in HTS 2922.49.4950. Widely used in nitric oxide boosters, wound healing formulations, and urea cycle support.
Duty Rate — China → United States
41.7%
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
• Ammonium content <200ppm specification prevents fertilizer classification
• Optical rotation data confirms L-form for therapeutic claims
• Bulk density declaration aids packaging compliance