L-Histidine Base from China

L-Histidine Base serves in buffer solutions and allergy research supplements. HTS 2922.49.80.00 applies to this imidazole-containing amino acid with single carboxyl function.

Duty Rate — China → United States

41.2%

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)

9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China

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Import Tips

• Include NMR spectra confirming structure; label moisture content <0.5%; comply with biotech import permits if for lab use