1H-Pyrazole-3-carboxylic Acid from Canada
1H-Pyrazole-3-carboxylic acid contains both unfused pyrazole ring and carboxylic acid function, classified under HTS 2933.19.90.00 with heterocyclic heading taking precedence. Used in pharmaceutical synthesis and agrochemical production.
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
Import Tips
• pH-sensitive - specify neutral packaging and include corrosion inhibitor if required
• Carboxylic acid derivatives need decarboxylation stability data for classification
• Confirm free acid vs. salt form - sodium salt may affect duty treatment