2922.49.49.50/L-Histidine/Canada

L-Histidine from Canada

L-Histidine is an essential amino acid featuring imidazole ring, classified as oxygen-function amino-acid under HTS 2922.49.4950. Used in allergy medications, metal chelation, and buffering agents.

Duty Rate — Canada → United States

4.2%

Rate breakdown

9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
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Import Tips

• Imidazole ring purity testing prevents heterocyclic misclassification

• USP/NF monograph compliance for pharmaceutical intermediates

• Moisture content <0.5% specification stability

L-Histidine from Canada — Import Duty Rate | HTS 2922.49.49.50