L-Histidine from Germany
L-Histidine essential amino acid for histamine production and metal chelation in supplements. HTS 2922.49.49 despite imidazole ring, classified by amino acid function. Used in allergy research and nutrition.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
Import Tips
• Imidazole content doesn't trigger heterocyclic classification per chapter structure
• Chelate formation documentation for pharma applications
• Buffer properties require pKa declaration for research imports