Epsilon-Acetyl-L-Lysine from Mexico
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 — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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