Imidazole-4-Carboxylic Acid from Japan
Imidazole-4-carboxylic acid is a key intermediate containing the unfused imidazole ring used in synthesis of pharmaceuticals and agrochemicals. Classified under HTS 2933.29.90.00 as other compounds with unfused imidazole ring structure and nitrogen hetero-atoms only.
Duty Rate — Japan → United States
21%
Rate breakdown
9903.04.628.5%Patented pharmaceutical articles that are the product of Japan, of a European Union member country, of South Korea, of Switzerland, or of Liechtenstein as provided for in subdivisions (c) and (f) of U.S. note 40 to this subchapter
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide structure confirmation via HPLC or mass spectrometry to verify unfused imidazole classification
• Include Safety Data Sheet (SDS) detailing handling precautions for corrosive organic acids