Isocaproic Acid from Mexico
Isocaproic acid (4-methylpentanoic acid) is a branched saturated acyclic C6 monocarboxylic acid used in fragrances, lubricants, and biochemical research. Classified in HTS 2915.90.50.50 as it does not match enumerated specific acids in heading 2915.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6096.2%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• CAS 646-07-1 certification required for customs verification
• Low melting point (-34°C); ensure heated transport if solidified
• Separate from straight-chain caproic acid documentation to avoid statistical reporting errors