3-Ketobutyric Acid from Japan
3-Ketobutyric acid, a beta-keto acid, contains ketone and carboxylic functions per HTS 2918.30.90.00 classification. Used in organic synthesis despite instability.
Duty Rate — Japan → 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
• Import as stabilized sodium salt to prevent decarboxylation
• Full elemental analysis required for customs verification
• Avoid 2918.90 if hydroxy tautomer predominates