L-Aspartic Acid USP Grade from China
Pharmaceutical-grade L-aspartic acid meeting USP standards, a chemically defined amino acid used in drug formulations and nutritional supplements. It falls under HTS 2922.49.49.15 as a pure L-isomer of aspartic acid, an oxygen-function amino-acid other than those with multiple oxygen functions. This non-essential amino acid plays a key role in protein synthesis and metabolic pathways.
Duty Rate — China → United States
29.2%
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)
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Provide Certificate of Analysis (COA) confirming L-isomer purity >98% and USP compliance to avoid reclassification
• Declare exact enantiomeric purity as impurities may trigger Chapter 29 note exclusions
• Include end-use documentation for pharma/food to prevent misclassification as industrial chemical