Isovaleraldehyde Precursor Isobutanal from Mexico
High-purity isobutanal serving as precursor for isovaleraldehyde synthesis in flavor chemistry, under HTS 2912.19.40.00 for acyclic aldehydes. Critical for green leaf volatile production in perfumes.
Duty Rate — Mexico → United States
15.5%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Include downstream synthesis pathway documentation if requested by CBP for end-use verification
• Purity >99.8% required; lower grades risk 2912.19.50 reclassification
• Refractive index (1.375-1.377) testing prevents substitution fraud