2933.29.35.00/Imidazole-4-Carboxylic Acid/Canada

Imidazole-4-Carboxylic Acid from Canada

Imidazole-4-carboxylic acid is a key intermediate for pharmaceutical synthesis, featuring the unfused imidazole ring required by heading 2933. As an aromatic heterocyclic compound listed in additional U.S. note 3, it imports under HTS 2933.29.35.00.

Duty Rate — Canada → United States

6.5%

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

• Include synthesis route and impurity profile for downstream pharma validation

• Ensure proper pH adjustment documentation for carboxylic acid handling

• Label with GHS hazard statements for corrosive organic acid properties

Imidazole-4-Carboxylic Acid from Canada — Import Duty Rate | HTS 2933.29.35.00