Isovaleric Acid from Mexico
Isovaleric acid (3-methylbutanoic acid) is a branched-chain saturated monocarboxylic acid with cheesy odor, used in flavors and perfumes. HTS 2915.29.50.00 covers this as 'other' acyclic saturated acid.
Duty Rate — Mexico → United States
12.8%
Rate breakdown
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 503-74-2 confirmation essential to distinguish from straight-chain
• Odor documentation may help CBP verification during examination
• Low temperature shipping required (melting point -2°C)