N-Acetyl-L-Alanine from China
N-Acetyl-L-Alanine is an acetyl protected form of L-alanine used in peptide synthesis and research. It remains classified as alanine under HTS 2922.49.4910 since simple acylation doesn't change the principal amino acid character.
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 NMR/HPLC confirming >95% purity as chemically defined compound
• Research chemical exemption from some FDA rules but TSCA registration needed
• Distinguish from multi-protected amino acids that may go to 2924 carboxyamide heading