2-Ketobutyric Acid from Canada
2-Ketobutyric acid is an alpha-keto acid with four carbons, fitting HTS 2918.30.90.00 as a carboxylic acid with ketone function. Applied in amino acid synthesis and metabolic pathway studies.
Duty Rate — Canada → United States
3.7%
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
• Refrigerated transport required (2-8°C) with temperature logger
• TSCA inventory confirmation mandatory for lab chemicals
• Distinguish from butyric acid (2915.60) lacking keto group