Epsilon-Acetyl-L-Lysine from Japan
Epsilon-acetyl-L-lysine is a chemically modified lysine where the epsilon-amino group is acetylated, used in biochemical research and peptide synthesis. It remains classified under 2922.41.00.90 as a lysine derivative salt/ester with retained principal amino-acid characteristics and single oxygen function.
Duty Rate — Japan → United States
23.8%
Rate breakdown
9903.04.6211.3%Patented pharmaceutical articles that are the product of Japan, of a European Union member country, of South Korea, of Switzerland, or of Liechtenstein as provided for in subdivisions (c) and (f) of U.S. note 40 to this subchapter
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include NMR spectra confirming epsilon-position acetylation (not alpha)
• Typically small packages; ensure biotech end-use declaration for valuation
• Avoid generic 'lysine derivative' labeling; specify modification precisely