L-Lysine Base USP (Free Form) from China
Pure L-lysine base (free amino acid) in USP grade, the active form before salt conversion, used in specialized formulations. Meets pharmacopeia identity, purity tests. Technically a 'salt thereof' under broad HTS 2922.41.0010 for USP lysine products.
Duty Rate — China → United States
16.2%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Confirm free base vs salt form with pH and titration data
• Handle hygroscopic nature—import in nitrogen-flushed containers
• Document conversion factor to lysine HCL for yield calculations